HR job title
- Associate Professor
- Contact Info
- Websites
Johnston, Bradley Associate Professor
Positions
- Associate Professor, School of Public Health, Health Science Center
- Associate Professor, Nutrition, College of Agriculture and Life Sciences
My areas of interest include evidence-based practice and policy, and the application of advanced randomized trial, systematic review, meta-analysis and guideline recommendation methods to a wide range of applied health science topics, with a particular interest in nutrition and health behavior. As the Director and Co-founder of the EvidenceBasedNutrition.org program, I work with an international consortium of researchers, research trainees and educators to develop evidence-based nutrition learning resources, and to conduct high quality systematic reviews and nutritional/lifestyle guideline recommendations on major nutrition, food, dietary pattern and health behavior questions. As both first and senior author, my work has been published in the Journal of the American Medical Association (JAMA), British Medical Journal (BMJ), Annals of Internal Medicine and The Cochrane Library. My Google H-Index is 63, and my groups work has been cited over 22,000 times.
- Overview
- Publications
- Research
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Overview
Publications
selected publications
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academic article
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Talukdar, J. R., Steen, J. P., Goldenberg, J. Z., Zhang, Q., Vernooij, R., Ge, L., ... Johnston, B. C.
(2023).
Saturated fat, the estimated absolute risk and certainty of risk for mortality and major cancer and cardiometabolic outcomes: an overview of systematic reviews. Systematic Reviews.
12(1), 179.
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Zenlea, I. S., Sebastianski, M., Kucera, M., Mushquash, A. R., Boles, K., Brogly, J., ... Steering Committee for Updating Canada's Clinical Practice Guideline for Managing Pediatric Obesity.
(2023).
Incorporation of patient and family values and preferences for health-related outcomes in paediatric obesity management: A systematic review. Pediatric Obesity.
18(5), e13006.
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Jayedi, A., Ge, L., Johnston, B. C., Shahinfar, H., Safabakhsh, M., Mohamadpur, S., ... Shab-Bidar, S.
(2023).
Comparative effectiveness of single foods and food groups on body weight: a systematic review and network meta-analysis of 152 randomized controlled trials. 62(3), 1153-1164.
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Karam, G., Agarwal, A., Sadeghirad, B., Jalink, M., Hitchcock, C. L., Ge, L., ... Johnston, B. C.
(2023).
Comparison of seven popular structured dietary programmes and risk of mortality and major cardiovascular events in patients at increased cardiovascular risk: systematic review and network meta-analysis. BMJ: British Medical Journal.
380, e072003-e072003.
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Johnston, B. C., Zeraatkar, D., Steen, J., de Jauregui, D., Zhu, H., Sun, M., ... Bala, M. M.
(2023).
Saturated fat and human health: a protocol for a methodologically innovative systematic review and meta-analysis to inform public health nutrition guidelines. Systematic Reviews.
12(1), 39.
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Rabassa, M., Hernández Ponce, Y., Garcia-Ribera, S., Johnston, B. C., Salvador Castell, G., Manera, M., ... Alonso-Coello, P
(2022).
Food-based dietary guidelines in Spain: an assessment of their methodological quality. European Journal of Clinical Nutrition.
76(3), 350-359.
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Valli, C., Santero, M., Prokop-Dorner, A., Howatt, V., Johnston, B. C., Zajac, J., ... Rabassa, M.
(2021).
Health Related Values and Preferences Regarding Meat Intake: A Cross-Sectional Mixed-Methods Study. International Journal of Environmental Research and Public Health.
18(21), 11585-11585.
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Swierz, M. J., Storman, D., Zajac, J., Koperny, M., Weglarz, P., Staskiewicz, W., ... Bala, M. M.
(2021).
Similarities, reliability and gaps in assessing the quality of conduct of systematic reviews using AMSTAR-2 and ROBIS: systematic survey of nutrition reviews. BMC Medical Research Methodology.
21(1), 261.
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Vernooij, R., Guyatt, G. H., Zeraatkar, D., Han, M. A., Valli, C., El Dib, R., ... Johnston, B. C.
(2021).
Reconciling contrasting guideline recommendations on red and processed meat for health outcomes. Journal of Clinical Epidemiology.
138, 215-218.
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Storman, D., Koperny, M., Zając, J., Polak, M., Toboła, P., Bochenek-Cibor, J., ... Bała, M. M
(2021).
Predictors of higher quality of systematic reviews on nutrition in cancer prevention. ANNALS OF EPIDEMIOLOGY.
61, 23-23.
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Howatt, V., Prokop-Dorner, A., Valli, C., Zajac, J., Bala, M. M., Alonso-Coello, P., Guyatt, G. H., & Johnston, B. C.
(2021).
Values and Preferences Related to Cancer Risk among Red and Processed Meat Eaters: A Pilot Cross-Sectional Study with Semi-Structured Interviews. Foods.
10(9), 2182-2182.
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Hilton Boon, M., Thomson, H., Shaw, B., Akl, E. A., Lhachimi, S. K., Lpez-Alcalde, J., ... GRADE Working Group.
(2021).
Challenges in applying the GRADE approach in public health guidelines and systematic reviews: a concept article from the GRADE Public Health Group. Journal of Clinical Epidemiology.
135, 42-53.
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Carrasco-Labra, A., Devji, T., Qasim, A., Phillips, M. R., Wang, Y., Johnston, B. C., ... Guyatt, G. H.
(2021).
Minimal important difference estimates for patient-reported outcomes: A systematic survey. Journal of Clinical Epidemiology.
133, 61-71.
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Valli, C., Howatt, V., Prokop-Dorner, A., Rabassa, M., Johnston, B. C., Zajac, J., ... Alonso-Coello, P.
(2021).
Evaluating adults’ health-related values and preferences about unprocessed red meat and processed meat consumption: protocol for a cross-sectional mixed-methods study. F1000Research.
9, 346-346.
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Goldenberg, J. Z., & Johnston, B. C.
(2021).
Low and very low carbohydrate diets for diabetes remission. BMJ: British Medical Journal.
373, n262-n262.
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Hayes, J. A., Aljuhani, T., De Oliveira, K., & Johnston, B. C.
(2021).
Safety and Efficacy of the Combination of Propofol and Ketamine for Procedural Sedation/Anesthesia in the Pediatric Population: A Systematic Review and Meta-analysis. 132(4), 979-992.
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da Costa, B. R., Saadat, P., Basciani, R., Agarwal, A., Johnston, B. C., & Jni, P.
(2021).
Visual Analogue Scale has higher assay sensitivity than WOMAC pain in detecting between-group differences in treatment effects: a meta-epidemiological study. Osteoarthritis and Cartilage.
29(3), 304-312.
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Mitra, S., Dorling, J., & Johnston, B. C.
(2021).
Optimizing practice guidelines through incorporating patient and family values and preferences. Seminars in Fetal and Neonatal Medicine.
26(1), 101194-101194.
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Goldenberg, J. Z., Day, A., Brinkworth, G. D., Sato, J., Yamada, S., Jnsson, T., ... Johnston, B. C.
(2021).
Efficacy and safety of low and very low carbohydrate diets for type 2 diabetes remission: systematic review and meta-analysis of published and unpublished randomized trial data. BMJ: British Medical Journal.
372, m4743-m4743.
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Devji, T., Carrasco-Labra, A., Qasim, A., Phillips, M., Johnston, B. C., Devasenapathy, N., ... Guyatt, G. H.
(2020).
Evaluating the credibility of anchor based estimates of minimal important differences for patient reported outcomes: instrument development and reliability study. 369, m1714-m1714.
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Parks, N. E., Jackson-Tarlton, C. S., Vacchi, L., Merdad, R., & Johnston, B. C.
(2020).
Dietary interventions for multiple sclerosis-related outcomes. Cochrane Database of Systematic Reviews.
5(5), CD004192.
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Johnston, B. C., Zeraatkar, D., Vernooij, R., Rabassa, M., El Dib, R., Valli, C., ... Guyatt, G. H.
(2020).
Unprocessed Red Meat and Processed Meat Consumption. Annals of Internal Medicine.
172(9), 639-640.
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Johnston, B. C., & Guyatt, G. H.
(2020).
Causal inference, interpreting and communicating results on red and processed meat. 111(5), 1107-1108.
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Zeraatkar, D., Guyatt, G. H., Alonso-Coello, P., Bala, M. M., Rabassa, M., Han, M. A., ... Johnston, B. C.
(2020).
Red and Processed Meat Consumption and Risk for All-Cause Mortality and Cardiometabolic Outcomes. 172(7), 511-512.
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Ge, L., Sadeghirad, B., Ball, G., da Costa, B. R., Hitchcock, C. L., Svendrovski, A., ... Johnston, B. C.
(2020).
Comparison of dietary macronutrient patterns of 14 popular named dietary programmes for weight and cardiovascular risk factor reduction in adults: systematic review and network meta-analysis of randomised trials. BMJ: British Medical Journal.
369, m696-m696.
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ukasik, J., Guo, Q., Boulos, L., Szajewska, H., & Johnston, B. C.
(2020).
Probiotics for the prevention of antibiotic-associated adverse events in children-A scoping review to inform development of a core outcome set. PLoS ONE.
15(5), e0228824-e0228824.
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Gagnier, J. J., & Johnston, B. C.
(2019).
Poor quality patient reported outcome measures bias effect estimates in orthopaedic randomized studies. Journal of Clinical Epidemiology.
116, 36-38.
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Zeraatkar, D., Johnston, B. C., Bartoszko, J., Cheung, K., Bala, M. M., Valli, C., ... El Dib, R.
(2019).
Effect of Lower Versus Higher Red Meat Intake on Cardiometabolic and Cancer Outcomes: A Systematic Review of Randomized Trials. 171(10), 721-731.
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Valli, C., Rabassa, M., Johnston, B. C., Kuijpers, R., Prokop-Dorner, A., Zajac, J., ... NutriRECS Working Group.
(2019).
Health-Related Values and Preferences Regarding Meat Consumption: A Mixed-Methods Systematic Review. 171(10), 742-755.
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Vernooij, R., Zeraatkar, D., Han, M. A., El Dib, R., Zworth, M., Milio, K., ... Johnston, B. C.
(2019).
Patterns of Red and Processed Meat Consumption and Risk for Cardiometabolic and Cancer Outcomes: A Systematic Review and Meta-analysis of Cohort Studies. Annals of Internal Medicine.
171(10), 732-741.
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Zeraatkar, D., Han, M. A., Guyatt, G. H., Vernooij, R., El Dib, R., Cheung, K., ... Johnston, B. C.
(2019).
Red and Processed Meat Consumption and Risk for All-Cause Mortality and Cardiometabolic Outcomes: A Systematic Review and Meta-analysis of Cohort Studies. 171(10), 703-710.
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Han, M. A., Zeraatkar, D., Guyatt, G. H., Vernooij, R., El Dib, R., Zhang, Y., ... Johnston, B. C.
(2019).
Reduction of Red and Processed Meat Intake and Cancer Mortality and Incidence: A Systematic Review and Meta-analysis of Cohort Studies. 171(10), 711-720.
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Johnston, B. C., Zeraatkar, D., Han, M. A., Vernooij, R., Valli, C., El Dib, R., ... Guyatt, G. H.
(2019).
Unprocessed Red Meat and Processed Meat Consumption: Dietary Guideline Recommendations From the Nutritional Recommendations (NutriRECS) Consortium. Annals of Internal Medicine.
171(10), 756-764.
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Goldenberg, J. Z., Brignall, M., Hamilton, M., Beardsley, J., Batson, R. D., Hawrelak, J., Lichtenstein, B., & Johnston, B. C.
(2019).
Biofeedback for treatment of irritable bowel syndrome. Cochrane Database of Systematic Reviews.
2019(11),
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Zeraatkar, D., Cheung, K., Milio, K., Zworth, M., Gupta, A., Bhasin, A., ... de Souza, R. J.
(2019).
Methods for the Selection of Covariates in Nutritional Epidemiology Studies: A Meta-Epidemiological Review. 3(10), nzz104-3010004.
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Mitra, S., Reid, M., McDougall, B., & Johnston, B. C.
(2019).
Are neonatal clinical practice guidelines truly evidence-based? A case for incorporating family values and preferences. Acta Paediatrica: promoting child health.
108(9), 1564-1566.
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Zeraatkar, D., Johnston, B. C., & Guyatt, G.
(2019).
Evidence Collection and Evaluation for the Development of Dietary Guidelines and Public Policy on Nutrition. Annual Review of Nutrition.
39(1), 227-247.
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Khan, R., Plahouras, J., Johnston, B. C., Scaffidi, M. A., Grover, S. C., & Walsh, C. M.
(2019).
Virtual reality simulation training in endoscopy: a Cochrane review and meta-analysis. Endoscopy.
51(7), 653-664.
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Johnston, B. C., Seivenpiper, J. L., Vernooij, R., de Souza, R. J., Jenkins, D., Zeraatkar, D., Bier, D. M., & Guyatt, G. H.
(2019).
The Philosophy of Evidence-Based Principles and Practice in Nutrition. Mayo Clinic Proceedings: Innovations, Quality and Outcomes.
3(2), 189-199.
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Guo, Q., Goldenberg, J. Z., Humphrey, C., Dib, R. E., & Johnston, B.
(2019).
1016 Probiotics for the Prevention of Pediatric Antibioticassociated Diarrhea. Gastroenterology.
156(6), s-220.
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Arruda, A., Zhang, Y., Gomaa, H., Bergamaschi, C., Guimaraes, C. C., Righesso, L., ... El Dib, R.
(2019).
Herbal medications for anxiety, depression, pain, nausea and vomiting related to preoperative surgical patients: a systematic review and meta-analysis of randomised controlled trials. BMJ Open.
9(5), e023729-e023729.
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Johnston, B. C., & Guyatt, G. H.
(2019).
Measurement of Treatment Effects Requires Instruments Responsive to Change Based on the Minimal Important Difference. Clinical Chemistry (Washington, DC): international journal of molecular diagnostics and laboratory medicine.
65(5), 708-709.
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Guo, Q., Goldenberg, J. Z., Humphrey, C., El Dib, R., & Johnston, B. C.
(2019).
Probiotics for the prevention of pediatric antibiotic-associated diarrhea. Cochrane Database of Systematic Reviews.
4(4), CD004827.
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Pereira, J., El Dib, R., Braz, L. G., Escudero, J., Hayes, J., & Johnston, B. C.
(2019).
N-acetylcysteine use among patients undergoing cardiac surgery: A systematic review and meta-analysis of randomized trials. PLoS ONE.
14(5), e0213862-e0213862.
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Johnston, B. C., Alonso-Coello, P., Bala, M. M., Zeraatkar, D., Rabassa, M., Valli, C., ... Guyatt, G. H.
(2018).
Methods fortrustworthy nutritional recommendations NutriRECS (Nutritional Recommendations and accessible Evidence summaries Composed of Systematic reviews): a protocol. BMC Medical Research Methodology.
18(1), 162.
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Busse, J. W., Wang, L. i., Kamaleldin, M., Craigie, S., Riva, J. J., Montoya, L., ... Guyatt, G. H.
(2018).
Opioids for Chronic Noncancer Pain: A Systematic Review and Meta-analysis. Journal of the American Medical Association (JAMA).
320(23), 2448-2460.
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Goldenberg, J. Z., Mertz, D., & Johnston, B. C.
(2018).
Probiotics to Prevent Clostridium difficile Infection in Patients Receiving Antibiotics. Journal of the American Medical Association (JAMA).
320(5), 499-500.
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Johnston, B. C., Lytvyn, L., Lo, C., Allen, S. J., Wang, D., Szajewska, H., ... Mertz, D.
(2018).
Microbial Preparations (Probiotics) for the Prevention of Clostridium difficile Infection in Adults and Children: An Individual Patient Data Meta-analysis of 6,851 Participants. Infection Control and Hospital Epidemiology.
39(7), 771-781.
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Johnston, B. C.
(2018).
Microbial Preparations (Probiotics) for the Prevention of Clostridium difficile Infection in Adults and Children: An Individual Patient Data Meta-analysis of 6,851 Participants - CORRIGENDUM. Infection Control and Hospital Epidemiology.
39(7), 894-894.
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Brignardello-Petersen, R., Johnston, B. C., Jadad, A. R., & Tomlinson, G.
(2018).
Using decision thresholds for ranking treatments in network meta-analysis results in more informative rankings. Journal of Clinical Epidemiology.
98, 62-69.
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Goldenberg, J. Z., Yap, C., Lytvyn, L., Lo, C., Beardsley, J., Mertz, D., & Johnston, B.
(2018).
Mo1924 - Probiotics for the Prevention of Clostridium-Difficile Associated Diarrhea in Adults and Children. Gastroenterology.
154(6), s-853.
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Goldenberg, J. Z., Yap, C., Lytvyn, L., Lo, C., Beardsley, J., Mertz, D., & Johnston, B. C.
(2017).
Probiotics for the prevention of Clostridium difficile-associated diarrhea in adults and children. 12(12), CD006095.
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Devji, T., Johnston, B. C., Patrick, D. L., Bhandari, M., Thabane, L., & Guyatt, G. H.
(2017).
Presentation approaches for enhancing interpretability of patient-reported outcomes (PROs) in meta-analysis: a protocol for a systematic survey of Cochrane reviews. BMJ Open.
7(9), e017138-e017138.
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Sadeghirad, B., & Johnston, B. C.
(2017).
The Scientific Basis of Guideline Recommendations on Sugar Intake. 167(3), 219-219.
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Guyatt, G. H., Ebrahim, S., Alonso-Coello, P., Johnston, B. C., Mathioudakis, A. G., Briel, M., ... Akl, E. A.
(2017).
GRADE guidelines 17: assessing the risk of bias associated with missing participant outcome data in a body of evidence. Journal of Clinical Epidemiology.
87, 14-22.
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Schandelmaier, S., Tomonaga, Y., Bassler, D., Meerpohl, J. J., von Elm, E., You, J. J., ... Briel, M.
(2017).
Premature Discontinuation of Pediatric Randomized Controlled Trials: A Retrospective Cohort Study. JOURNAL OF PEDIATRICS.
184, 209-214.e1.
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da Costa, B. R., Beckett, B., Diaz, A., Resta, N. M., Johnston, B. C., Egger, M., Jni, P., & Armijo-Olivo, S.
(2017).
Effect of standardized training on the reliability of the Cochrane risk of bias assessment tool: a prospective study. Systematic Reviews.
6(1), 44.
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Ebrahim, S., Vercammen, K., Sivanand, A., Guyatt, G. H., Carrasco-Labra, A., Fernandes, R. M., ... Johnston, B. C.
(2017).
Minimally Important Differences in Patient or Proxy-Reported Outcome Studies Relevant to Children: A Systematic Review. Pediatrics.
139(3), e20160833.
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Erickson, J., Sadeghirad, B., Lytvyn, L., Slavin, J., & Johnston, B. C.
(2017).
The Scientific Basis of Guideline Recommendations on Sugar Intake: A Systematic Review. 166(4), 257-267.
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Agarwal, A., Johnston, B. C., Vernooij, R., Carrasco-Labra, A., Brignardello-Petersen, R., Neumann, I., ... Alonso-Coello, P.
(2017).
Authors seldom report the most patient-important outcomes andabsoluteeffect measures in systematic review abstracts. Journal of Clinical Epidemiology.
81, 3-12.
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Johnston, B. C., & Guyatt, G. H.
(2016).
Best (but oft-forgotten) practices: intention-to-treat, treatment adherence, and missing participant outcome data in the nutrition literature. 104(5), 1197-1201.
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Johnston, B. C., Miller, P. A., Agarwal, A., Mulla, S., Khokhar, R., De Oliveira, K., ... Guyatt, G. H.
(2016).
Limited responsiveness related to the minimal important difference of patient-reported outcomes in rare diseases. Journal of Clinical Epidemiology.
79, 10-21.
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Sadeghirad, B., Duhaney, T., Motaghipisheh, S., Campbell, N., & Johnston, B. C.
(2016).
Influence of unhealthy food and beverage marketing on children's dietary intake and preference: a systematic review and meta-analysis of randomized trials. Obesity Reviews.
17(10), 945-959.
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Brown, S., Johnston, B., Amaria, K., Watkins, J., Campbell, F., Pehora, C., & McGrath, P.
(2016).
A randomized controlled trial of amitriptyline versus gabapentin for complex regional pain syndrome type I and neuropathic pain in children. Scandinavian Journal of Pain.
13(1), 156-163.
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Johnston, B. C., Goldenberg, J. Z., & Parkin, P. C.
(2016).
Probiotics and the Prevention of Antibiotic-Associated Diarrhea in Infants and Children. Journal of the American Medical Association (JAMA).
316(14), 1484-1485.
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Shamseer, L., Sampson, M., Bukutu, C., Schmid, C. H., Nikles, J., Tate, R., ... CENT group.
(2016).
CONSORT extension for reporting N-of-1 trials (CENT) 2015: explanation and elaboration. Journal of Clinical Epidemiology.
76, 18-46.
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Lytvyn, L., Mertz, D., Sadeghirad, B., Alaklobi, F., Selva, A., Alonso-Coello, P., & Johnston, B. C.
(2016).
Prevention of Clostridium difficile Infection: A Systematic Survey of Clinical Practice Guidelines. Infection Control and Hospital Epidemiology.
37(8), 901-908.
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Brignardello-Petersen, R., Carrasco-Labra, A., Jadad, A. R., Johnston, B. C., & Tomlinson, G.
(2016).
Diverse criteria and methods are used to compare treatment effect estimates: a scoping review. Journal of Clinical Epidemiology.
75, 29-39.
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Kasenda, B., von Elm, E., You, J. J., Blmle, A., Tomonaga, Y., Saccilotto, R., ... Briel, M.
(2016).
Agreements between Industry and Academia on Publication Rights: A Retrospective Study of Protocols and Publications of Randomized Clinical Trials. PLoS Medicine.
13(6), e1002046-e1002046.
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Wang, L. i., Johnston, B., Kaushal, A., Cheng, D., Zhu, F., & Martin, J.
(2016).
Ketamine added to morphine or hydromorphone patient-controlled analgesia for acute postoperative pain in adults: a systematic review and meta-analysis of randomized trials. Canadian Journal of Anaesthesia.
63(3), 311-325.
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Lytvyn, L., Quach, K., Banfield, L., Johnston, B. C., & Mertz, D.
(2016).
Probiotics and synbiotics for the prevention of postoperative infections following abdominal surgery: a systematic review and meta-analysis of randomized controlled trials. Journal of Hospital Infection.
92(2), 130-139.
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Johnston, B. C., Alonso-Coello, P., Friedrich, J. O., Mustafa, R. A., Tikkinen, K., Neumann, I., ... Guyatt, G. H.
(2016).
Do clinicians understand the size of treatment effects? A randomized survey across 8 countries. CMAJ.
188(1), 25-32.
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Miller, P. A., Mulla, S. M., Adams-Webber, T., Sivji, Y., Guyatt, G. H., & Johnston, B. C.
(2016).
PATIENT-REPORTED OUTCOMES IN RARE LYSOSOMAL STORAGE DISEASES: KEY INFORMANT INTERVIEWS AND A SYSTEMATIC REVIEW PROTOCOL. International Journal of Technology Assessment in Health Care.
32(6), 393-399.
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Schandelmaier, S., von Elm, E., You, J. J., Blmle, A., Tomonaga, Y., Lamontagne, F., ... Briel, M.
(2016).
Premature Discontinuation of Randomized Trials in Critical and Emergency Care: A Retrospective Cohort Study. Critical Care Medicine.
44(1), 130-137.
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Goldenberg, J. Z., Lytvyn, L., Steurich, J., Parkin, P., Mahant, S., & Johnston, B. C.
(2015).
Probiotics for the prevention of pediatric antibiotic-associated diarrhea. Cochrane Database of Systematic Reviews.
CD004827.
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Akl, E. A., Shawwa, K., Kahale, L. A., Agoritsas, T., Brignardello-Petersen, R., Busse, J. W., ... Guyatt, G. H.
(2015).
Reporting missing participant data in randomised trials: systematic survey of the methodological literature and a proposed guide. BMJ Open.
5(12), e008431-e008431.
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Busse, J. W., Bartlett, S. J., Dougados, M., Johnston, B. C., Guyatt, G. H., Kirwan, J. R., ... Wells, G. A.
(2015).
Optimal Strategies for Reporting Pain in Clinical Trials and Systematic Reviews: Recommendations from an OMERACT 12 Workshop. Journal of Rheumatology.
42(10), 1962-1970.
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Johnston, B. C., Ebrahim, S., Carrasco-Labra, A., Furukawa, T. A., Patrick, D. L., Crawford, M. W., ... Nesrallah, G.
(2015).
Minimally important difference estimates and methods: a protocol. BMJ Open.
5(10), e007953-e007953.
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Mulla, S. M., Maqbool, A., Sivananthan, L., Lopes, L. C., Schandelmaier, S., Kamaleldin, M., ... Busse, J. W.
(2015).
Reporting of IMMPACT-recommended core outcome domains among trials assessing opioids for chronic non-cancer pain. Pain.
156(9), 1615-1619.
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Akl, E. A., Carrasco-Labra, A., Brignardello-Petersen, R., Neumann, I., Johnston, B. C., Sun, X., ... Alonso-Coello, P.
(2015).
Reporting, handling and assessing the risk of bias associated with missing participant data in systematic reviews: a methodological survey. BMJ Open.
5(9), e009368-e009368.
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Zhang, Y., Zhang, S., Thabane, L., Furukawa, T. A., Johnston, B. C., & Guyatt, G. H.
(2015).
Although not consistently superior, the absolute approach to framing the minimally important difference has advantages over the relative approach. Journal of Clinical Epidemiology.
68(8), 888-894.
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Rosenthal, R., Kasenda, B., Dell-Kuster, S., von Elm, E., You, J., Blmle, A., ... Briel, M.
(2015).
Completion and Publication Rates of Randomized Controlled Trials in Surgery: An Empirical Study. ANNALS OF SURGERY.
262(1), 68-73.
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Akl, E. A., Kahale, L. A., Agoritsas, T., Brignardello-Petersen, R., Busse, J. W., Carrasco-Labra, A., ... Guyatt, G.
(2015).
Handling trial participants with missing outcome data when conducting a meta-analysis: a systematic survey of proposed approaches. Systematic Reviews.
4(1), 98.
-
Shamseer, L., Sampson, M., Bukutu, C., Schmid, C. H., Nikles, J., Tate, R., ... CENT Group.
(2015).
CONSORT extension for reporting N-of-1 trials (CENT) 2015: Explanation and elaboration. 350(may14 15), h1793-h1793.
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Guyatt, G. H., Thorlund, K., Oxman, A. D., Walter, S. D., Patrick, D., Furukawa, T. A., ... Schunemann, H. J.
(2015).
Erratum to GRADE guidelines: 13. Preparing Summary of Findings tables and evidence profilescontinuous outcomes [J Clin Epidemiol 2013;66(2):173-183]. Journal of Clinical Epidemiology.
68(4), 475-475.
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da Costa, B. R., Resta, N. M., Beckett, B., Israel-Stahre, N., Diaz, A., Johnston, B. C., ... Armijo-Olivo, S.
(2014).
Effect of standardized training on the reliability of the Cochrane risk of bias assessment tool: a study protocol. Systematic Reviews.
3(1), 144.
-
Alonso-Coello, P., Carrasco-Labra, A., Brignardello-Petersen, R., Neumann, I., Akl, E. A., Sun, X., ... Guyatt, G. H.
(2014).
Erratum to: A methodological survey of the analysis, reporting and interpretation of Absolute Risk ReductiOn in systematic revieWs (ARROW): a study protocol. Systematic Reviews.
3(1), 76.
-
Johnston, B. C., Kanters, S., Bandayrel, K., Wu, P., Naji, F., Siemieniuk, R. A., ... Mills, E. J.
(2014).
Comparison of weight loss among named diet programs in overweight and obese adults: a meta-analysis. Journal of the American Medical Association (JAMA).
312(9), 923-933.
-
Bandayrel, K., & Johnston, B. C.
(2014).
Recent advances in patient and proxy-reported quality of life research. Health and Quality of Life Outcomes.
12(1), 110.
-
Kasenda, B., Schandelmaier, S., Sun, X., von Elm, E., You, J., Blmle, A., ... DISCO Study Group.
(2014).
Subgroup analyses in randomised controlled trials: cohort study on trial protocols and journal publications. 349(jul16 1), g4539-g4539.
-
Ebrahim, S., Johnston, B. C., Akl, E. A., Mustafa, R. A., Sun, X., Walter, S. D., ... Guyatt, G. H.
(2014).
Addressing continuous data measured with different instruments for participants excluded from trial analysis: a guide for systematic reviewers. Journal of Clinical Epidemiology.
67(5), 560-570.
-
Kasenda, B., von Elm, E., You, J., Blmle, A., Tomonaga, Y., Saccilotto, R., ... Briel, M.
(2014).
Prevalence, characteristics, and publication of discontinued randomized trials. Journal of the American Medical Association (JAMA).
311(10), 1045-1051.
-
O'Caoimh, R., Svendrovski, A., Johnston, B. C., Gao, Y., McGlade, C., Eustace, J., ... Molloy, D. W.
(2014).
The Quick Mild Cognitive Impairment screen correlated with the Standardized Alzheimer's Disease Assessment Scale-cognitive section in clinical trials. Journal of Clinical Epidemiology.
67(1), 87-92.
-
Johnston, B. C., Patrick, D. L., Thorlund, K., Busse, J. W., da Costa, B. R., Schnemann, H. J., & Guyatt, G. H.
(2013).
Patient-reported outcomes in meta-analyses-part 2: methods for improving interpretability for decision-makers. Health and Quality of Life Outcomes.
11(1), 211-211.
-
Alonso-Coello, P., Carrasco-Labra, A., Brignardello-Petersen, R., Neumann, I., Akl, E. A., Sun, X., ... Guyatt, G. H.
(2013).
A methodological survey of the analysis, reporting and interpretation of Absolute Risk ReductiOn in systematic revieWs (ARROW): a study protocol. Systematic Reviews.
2(1), 113.
-
Ebrahim, S., Akl, E. A., Mustafa, R. A., Sun, X., Walter, S. D., Heels-Ansdell, D., ... Guyatt, G. H.
(2013).
Addressing continuous data for participants excluded from trial analysis: a guide for systematic reviewers. Journal of Clinical Epidemiology.
66(9), 1014-1021.e1.
-
da Costa, B. R., Nesch, E., Rutjes, A. W., Johnston, B. C., Reichenbach, S., Trelle, S., Guyatt, G. H., & Jni, P.
(2013).
Combining follow-up and change data is valid in meta-analyses of continuous outcomes: a meta-epidemiological study. Journal of Clinical Epidemiology.
66(8), 847-855.
-
Busse, J. W., Schandelmaier, S., Kamaleldin, M., Hsu, S., Riva, J. J., Vandvik, P. O., ... Guyatt, G. H.
(2013).
Opioids for chronic non-cancer pain: a protocol for a systematic review of randomized controlled trials. Systematic Reviews.
2(1), 66.
-
Johnston, B. C., Patrick, D. L., Busse, J. W., Schnemann, H. J., Agarwal, A., & Guyatt, G. H.
(2013).
Patient-reported outcomes in meta-analyses--Part 1: assessing risk of bias and combining outcomes. Health and Quality of Life Outcomes.
11(1), 109-109.
-
Goldenberg, J. Z., Ma, S., Saxton, J. D., Martzen, M. R., Vandvik, P. O., Thorlund, K., Guyatt, G. H., & Johnston, B. C.
(2013).
Probiotics for the prevention of Clostridium difficile-associated diarrhea in adults and children. Cochrane Database of Systematic Reviews.
CD006095.
-
Johnston, B. C., Goldenberg, J. Z., & Guyatt, G. H.
(2013).
Probiotics for the prevention of Clostridium difficile-associated diarrhea. In response. 158(9), 706-707.
-
Bala, M. M., Akl, E. A., Sun, X., Bassler, D., Mertz, D., Mejza, F., ... Guyatt, G. H.
(2013).
Randomized trials published in higher vs. lower impact journals differ in design, conduct, and analysis. Journal of Clinical Epidemiology.
66(3), 286-295.
-
Guyatt, G. H., Thorlund, K., Oxman, A. D., Walter, S. D., Patrick, D., Furukawa, T. A., ... Schunemann, H. J.
(2013).
GRADE guidelines: 13. Preparing summary of findings tables and evidence profiles-continuous outcomes. Journal of Clinical Epidemiology.
66(2), 173-183.
-
Akl, E. A., Johnston, B. C., Alonso-Coello, P., Neumann, I., Ebrahim, S., Briel, M., Cook, D. J., & Guyatt, G. H.
(2013).
Addressing dichotomous data for participants excluded from trial analysis: a guide for systematic reviewers. PLoS ONE.
8(2), e57132-e57132.
-
Johnston, B. C., Ma, S., Goldenberg, J. Z., Thorlund, K., Vandvik, P. O., Loeb, M., & Guyatt, G. H.
(2012).
Probiotics for the prevention of Clostridium difficile-associated diarrhea: a systematic review and meta-analysis. 157(12), 878-888.
-
da Costa, B. R., Rutjes, A., Johnston, B. C., Reichenbach, S., Nesch, E., Tonia, T., ... Jni, P.
(2012).
Methods to convert continuous outcomes into odds ratios of treatment response and numbers needed to treat: meta-epidemiological study. International Journal of Epidemiology.
41(5), 1445-1459.
-
Kasenda, B., von Elm, E. B., You, J., Blmle, A., Tomonaga, Y., Saccilotto, R., ... Briel, M.
(2012).
Learning from failure--rationale and design for a study about discontinuation of randomized trials (DISCO study). BMC Medical Research Methodology.
12(1), 131.
-
Johnston, B. C., Thorlund, K., da Costa, B. R., Furukawa, T. A., & Guyatt, G. H.
(2012).
New methods can extend the use of minimal important difference units in meta-analyses of continuous outcome measures. Journal of Clinical Epidemiology.
65(8), 817-826.
-
Vandvik, P. O., Santesso, N., Akl, E. A., You, J., Mulla, S., Spencer, F. A., ... Guyatt, G.
(2012).
Formatting modifications in GRADE evidence profiles improved guideline panelists comprehension and accessibility to information. A randomized trial. Journal of Clinical Epidemiology.
65(7), 748-755.
-
Sinha, I. P., Altman, D. G., Beresford, M. W., Boers, M., Clarke, M., Craig, J., ... StaR Child Health Group.
(2012).
Standard 5: selection, measurement, and reporting of outcomes in clinical trials in children. Pediatrics.
129 Suppl 3(Supplement 3), S146-S152.
-
Akl, E. A., Briel, M., You, J. J., Sun, X., Johnston, B. C., Busse, J. W., ... Guyatt, G. H.
(2012).
Potential impact on estimated treatment effects of information lost to follow-up in randomised controlled trials (LOST-IT): systematic review. 344(may18 1), e2809-e2809.
-
Akl, E. A., Sun, X., Busse, J. W., Johnston, B. C., Briel, M., Mulla, S., ... Guyatt, G. H.
(2012).
Specific instructions for estimating unclearly reported blinding status in randomized trials were reliable and valid. Journal of Clinical Epidemiology.
65(3), 262-267.
-
Sun, X., Briel, M., Busse, J. W., You, J. J., Akl, E. A., Mejza, F., ... Guyatt, G. H.
(2012).
Credibility of claims of subgroup effects in randomised controlled trials: systematic review. 344(mar15 1), e1553-e1553.
-
Thorlund, K., Imberger, G., Johnston, B. C., Walsh, M., Awad, T., Thabane, L., ... Wetterslev, J.
(2012).
Evolution of heterogeneity (I2) estimates and their 95% confidence intervals in large meta-analyses. PLoS ONE.
7(7), e39471-e39471.
-
Thorlund, K., Walter, S. D., Johnston, B. C., Furukawa, T. A., & Guyatt, G. H.
(2011).
Pooling health-related quality of life outcomes in meta-analysis-a tutorial and review of methods for enhancing interpretability. Research Synthesis Methods.
2(3), 188-203.
-
Sun, X., Briel, M., Busse, J. W., You, J. J., Akl, E. A., Mejza, F., ... Guyatt, G. H.
(2011).
The influence of study characteristics on reporting of subgroup analyses in randomised controlled trials: systematic review. 342(mar28 1), d1569-d1569.
-
Johnston, B. C., Thorlund, K., Schnemann, H. J., Xie, F., Murad, M. H., Montori, V. M., & Guyatt, G. H.
(2010).
Improving the interpretation of quality of life evidence in meta-analyses: the application of minimal important difference units. Health and Quality of Life Outcomes.
8(1), 116.
-
Johnston, B. C., Shamseer, L., da Costa, B. R., Tsuyuki, R. T., & Vohra, S.
(2010).
Measurement issues in trials of pediatric acute diarrheal diseases: a systematic review. Pediatrics.
126(1), e222-e231.
-
Botting, M. J., Porbeni, E. O., Joffres, M. R., Johnston, B. C., Black, R. E., & Mills, E. J.
(2010).
Water and sanitation infrastructure for health: The impact of foreign aid. Globalization and Health.
6(1), 12.
-
Sun, X., Briel, M., Busse, J. W., Akl, E. A., You, J. J., Mejza, F., ... Guyatt, G. H.
(2009).
Subgroup Analysis of Trials Is Rarely Easy (SATIRE): a study protocol for a systematic review to characterize the analysis, reporting, and claim of subgroup effects in randomized trials. Trials.
10(1), 101.
-
Vandermeer, B., Bialy, L., Hooton, N., Hartling, L., Klassen, T. P., Johnston, B. C., & Wiebe, N.
(2009).
Meta-analyses of safety data: a comparison of exact versus asymptotic methods. Statistical Methods in Medical Research.
18(4), 421-432.
-
Akl, E. A., Briel, M., You, J. J., Lamontagne, F., Gangji, A., Cukierman-Yaffe, T., ... Guyatt, G. H.
(2009).
LOST to follow-up Information in Trials (LOST-IT): a protocol on the potential impact. Trials.
10(1), 40.
-
Vohra, S., Johnston, B. C., Laycock, K. L., Midodzi, W. K., Dhunnoo, I., Harris, E., & Baydala, L.
(2008).
Safety and tolerability of North American ginseng extract in the treatment of pediatric upper respiratory tract infection: a phase II randomized, controlled trial of 2 dosing schedules. Pediatrics.
122(2), e402-e410.
-
Johnston, B. C., da Costa, B. R., Devereaux, P. J., Akl, E. A., Busse, J. W., & Expertise-Based RCT Working Group.
(2008).
The use of expertise-based randomized controlled trials to assess spinal manipulation and acupuncture for low back pain: a systematic review. Spine.
33(8), 914-918.
-
Vohra, S., Johnston, B. C., Cramer, K., & Humphreys, K.
(2007).
Adverse events associated with pediatric spinal manipulation: a systematic review. Pediatrics.
119(1), e275-e283.
-
Johnston, B. C., & Vohra, S.
(2006).
Investigator-initiated trials are more impartial. Nature.
443(7108), 144-144.
-
Johnston, B. C., Supina, A. L., & Vohra, S.
(2006).
Probiotics for pediatric antibiotic-associated diarrhea: a meta-analysis of randomized placebo-controlled trials. CMAJ.
175(4), 377-383.
-
Gehring, N. D., Johnston, B. C., Birken, C., Buchholz, A., Cooper, J., Erdstein, J., ... Ball, G.
A survey of stakeholders' perceived importance of health indicators and subgroup analyses to inform the Canadian clinical practice guideline for managing paediatric obesity. Pediatric Obesity.
17(11), e12949.
-
Han, M. A., Leung, G., Storman, D., Xiao, Y., Srivastava, A., Talukdar, J. R., ... Guyatt, G.
Causal language use in systematic reviews of observational studies is often inconsistent with intent: a systematic survey. Journal of Clinical Epidemiology.
148, 65-73.
-
Johnston, B. C., Donen, R., Pooni, A., Pond, J., Xie, F., Giglia, L., ... Guyatt, G. H.
Conceptual framework for health-related quality of life assessment in acute gastroenteritis
-
Pehora, C., Pearson, A. M., Kaushal, A., Crawford, M., & Johnston, B. C.
Dexamethasone as an adjuvant to peripheral nerve block. Cochrane Database of Systematic Reviews.
-
Srivastava, A., Chau, K., Kwon, H., Guo, Q., & Johnston, B. C.
Early and frequent exposure to antibiotics in children and the risk of obesity: systematic review and meta-analysis of observational studies
-
Valli, C., Howatt, V., Prokop-Dorner, A., Rabassa, M., Johnston, B. C., Zajac, J., ... Alonso-Coello, P.
Evaluating adults' health-related values and preferences about unprocessed red meat and processed meat consumption: protocol for a cross-sectional mixed-methods study
-
Mitra, S., Hatfield, T., Campbell-Yeo, M., Dorling, J., & Johnston, B. C.
Evaluation of Health-Related Values and Preferences of Adults Who Were Preterm Infants and Parents of Preterm Infants Concerning Use of Prophylactic Cyclooxygenase Inhibitor Drugs. JAMA network open.
6(3), e232273-e232273.
-
Ghosh, N. R., Esmaeilinezhad, Z., Zajc, J., Creasy, R. A., Lorenz, S. G., Klatt, K. C., ... Johnston, B. C.
Evidence-Based Practice Competencies among Nutrition Professionals and Students: A Systematic Review. 154(4), 1414-1427.
-
Sadeghirad, B., Morgan, R. L., Zeraatkar, D., Zea, A. M., Couban, R., Johnston, B. C., & Florez, I. D.
Human and Bovine Colostrum for Prevention of Necrotizing Enterocolitis: A Meta-analysis. Pediatrics.
142(2), e20180767.
-
Ding, Z., Ninan, K., Johnston, B. C., Moayyedi, P., Sherlock, M., & Zachos, M.
Microbiota signatures and mucosal healing in the use of enteral nutrition therapy v. corticosteroids for the treatment of children with Crohn's disease: a systematic review and meta-analysis. British Journal of Nutrition.
130(8), 1385-1402.
-
Johnston, B., De Smet, S., Leroy, F., Mente, A., & Stanton, A.
Non-communicable disease risk associated with red and processed meat consumption-magnitude, certainty, and contextuality of risk?. Animal Frontiers.
13(2), 19-27.
-
Bala, M. M., Agarwal, A., Klatt, K. C., Vernooij, R., Alonso-Coello, P., Steen, J. P., ... Johnston, B. C.
Nutrition Users Guides: RCTs Part 2 structured guide for interpreting and applying study results from randomised controlled trials on therapy or prevention questions. BMJ Nutrition, Prevention and Health.
e000834-e000834.
-
Agarwal, A., Bala, M. M., Zeraatkar, D., Valli, C., Alonso-Coello, P., Ghosh, N. R., ... Johnston, B. C.
Nutrition users guides: RCTs part 1 structured guide for assessing risk of bias in randomised controlled trials that address therapy or prevention questions. BMJ Nutrition, Prevention and Health.
e000833-e000833.
-
Zeraatkar, D., de Souza, R. J., Guyatt, G. H., Bala, M. M., Alonso-Coello, P., & Johnston, B. C.
Nutrition users guides: systematic reviews part 1 structured guide for methodological assessment, interpretation and application of systematic reviews and meta-analyses of non-randomised nutritional epidemiology studies. BMJ Nutrition, Prevention and Health.
e000835-e000835.
-
Mitra, S., Whitehead, L., Smith, K., Maclean, B., Nixon, R., Veysey, A., ... Johnston, B. C.
Prophylactic cyclo-oxygenase inhibitor drugs for the prevention of morbidity and mortality in extremely preterm infants: a clinical practice guideline incorporating family values and preferences. Archives of Disease in Childhood: Fetal and Neonatal Edition.
109(3), 232-238.
-
Mitra, S., Gardner, C. E., MacLellan, A., Disher, T., Styranko, D. M., Kuhle, S., Johnston, B. C., & Dorling, J.
Prophylactic cyclooxygenase inhibitor drugs for the prevention of morbidity and mortality in preterm infants: a network metaanalysis. Cochrane Database of Systematic Reviews.
-
Carrasco-Labra, A., Devji, T., Qasim, A., Phillips, M., Johnston, B. C., Devasenapathy, N., ... Guyatt, G. H.
Serious reporting deficiencies exist in minimal important difference studies: current state and suggestions for improvement. Journal of Clinical Epidemiology.
150, 25-32.
-
ukasik, J., Dierikx, T., Johnston, B. C., de Meij, T., & Szajewska, H.
Systematic review: effect of probiotics on antibiotic-induced microbiomedisruption. Beneficial microbes.
1-17.
-
Heimke, F., Furukawa, Y., Siafis, S., Johnston, B. C., Engel, R. R., Furukawa, T. A., & Leucht, S.
Understanding effect size: an international online survey among psychiatrists, psychologists, physicians from other medical specialities, dentists and other health professionals. Evidence-Based Mental Health.
27(1), e300978-e300978.
-
Talukdar, J. R., Steen, J. P., Goldenberg, J. Z., Zhang, Q., Vernooij, R., Ge, L., ... Johnston, B. C.
(2023).
Saturated fat, the estimated absolute risk and certainty of risk for mortality and major cancer and cardiometabolic outcomes: an overview of systematic reviews. Systematic Reviews.
12(1), 179.
-
chapter
-
Johnston, B. C., Patrick, D. L., Devji, T., Maxwell, L. J., Bingham, C. O., Beaton, D. E., ... Guyatt, G. H.
(2019).
Patientreported outcomes. Higgins, J. P., Thomas, J., Chandler, J., Cumpston, M., Li, T., Page, M. J., & Welch, V. A. (Eds.),
Cochrane Handbook for Systematic Reviews of Interventions.
(pp. 479-492).
Wiley.
-
Schnemann, H. J., Johnston, B. C., Jaeschke, R., & Guyatt, G. H.
(2013).
Using QualityofLife Measurements in Pharmacoepidemiologic Research. Textbook of Pharmacoepidemiology.
(pp. 291-299).
Wiley.
-
Schnemann, H., Johnston, B. C., Jaeschke, R., & Guyatt, G. H.
(2012).
Using QualityofLife Measurements in Pharmacoepidemiologic Research. Pharmacoepidemiology.
(pp. 709-722).
Wiley.
-
Johnston, B. C., Goldenberg, J. Z., Vandvik, P. O., Sun, X., & Guyatt, G. H.
Probiotics for the prevention of pediatric antibiotic-associated diarrhea. Johnston, B. C. (Eds.),
Cochrane Database of Systematic Reviews.
CD004827.
Wiley.
-
Johnston, B. C., Patrick, D. L., Devji, T., Maxwell, L. J., Bingham, C. O., Beaton, D. E., ... Guyatt, G. H.
(2019).
Patientreported outcomes. Higgins, J. P., Thomas, J., Chandler, J., Cumpston, M., Li, T., Page, M. J., & Welch, V. A. (Eds.),
Cochrane Handbook for Systematic Reviews of Interventions.
(pp. 479-492).
Wiley.
-
institutional repository document
-
ukasik, J., Guo, Q., Boulos, L., Szajewska, H., & Johnston, B. C.
(2020).
Probiotics for the prevention of antibiotic-associated adverse events in children a systematic review to inform development of a core outcome set
-
Ghosh, N. R., Esmaeilinezhad, Z., Zajc, J., Creasy, R. A., Lorenz, S. G., Crews, M., ... Johnston, B. C.
Evidence-Based Practice Competencies among Nutrition Professionals and Students: A Systematic Review
-
ukasik, J., Guo, Q., Boulos, L., Szajewska, H., & Johnston, B. C.
(2020).
Probiotics for the prevention of antibiotic-associated adverse events in children a systematic review to inform development of a core outcome set
Research
co-principal investigator on
Teaching
teaching activities
- NFSC204 Perspectives Nutr Fstc Instructor
- NFSC485 Directed Studies Instructor
- NFSC685 Directed Studies Instructor
- NUTR204 Perspectives Nutr Fstc Instructor
- NUTR471 Crit Eval Nutr Fstc Lit Instructor
- NUTR481 Seminar Instructor
- NUTR491 Hnr-research Instructor
- NUTR671 Crit Eval Nutr & Fstc Lit Instructor
- NUTR685 Directed Studies Instructor
- NUTR689 Sptp: Synth Diss Impl Evidence Instructor
- NUTR691 Research Instructor
Contact
first name
- Bradley
has last name
- Johnston
Other
In the News
- bradley.johnston@tamu.edu