Heart disease symptoms, cognitive functioning, health communication, treatment anxiety, and health-related quality of life in paediatric heart disease: a multiple mediator analysis.
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OBJECTIVES: The objective was to investigate the serial mediating effects of perceived cognitive functioning, patient health communication, and treatment anxiety in the relationship between heart disease symptoms and overall generic health-related quality of life in children with heart disease from the patient perspective. METHODS: Heart Disease Symptoms, Cognitive Problems, Communication and Treatment Anxiety Scales from Pediatric Quality of Life Inventory (PedsQL) Cardiac Module and PedsQL 4.0 Generic Core Scales were completed by 278 children with CHD ages 8-18. A serial multiple mediator model analysis was conducted to test the sequential mediating effects of perceived cognitive functioning, patient health communication, and treatment anxiety as intervening variables in the relationship between the heart disease symptoms predictor variable and overall generic health-related quality of life. RESULTS: Heart disease symptoms predictive effects on overall generic health-related quality of life were serially mediated in part by cognitive functioning, patient health communication, and treatment anxiety. In a predictive analytics model with age and gender demographic covariates, heart disease symptoms, perceived cognitive functioning, patient health communication, and treatment anxiety accounted for 67% of the variance in patient-reported overall generic health-related quality of life (p < 0.001), representing a large effect size. CONCLUSIONS: Perceived cognitive functioning, patient health communication, and treatment anxiety explain in part the mechanism of heart disease symptoms predictive effects on overall generic health-related quality of life in paediatric heart disease. Identifying the mediators of heart disease symptoms on overall generic health-related quality of life from the patient perspective may inform targeted clinical interventions and future patient-centred clinical research to improve overall daily functioning.
