PC program for assessing the relationship between rate of change and initial value. Academic Article

abstract

• A menu-driven PC program implementing Blomqvist's [J. Am. Stat. Assn. 72, 746-749, 1977] method for assessing the relationship between rate of change and initial value is described, illustrated and made available. It is shown that the naive approach to this problem--computing the correlation between the initial value and either the amount or rate of change--results in a negatively biased estimator. The extent of this bias can be dramatic and may lead investigators to conclude that a negative correlation is present when none exists; or that there is no correlation when in fact the correlation is positive. Blomqvist's (maximum likelihood) estimator avoids this bias, and is obtained by a transformation of the naive estimator.

authors

• Schneiderman, Emet

published proceedings

• Comput Biol Med

author list (cited authors)

• Kowalski, C. J., Schneiderman, E. D., & Willis, S. M.

citation count

• 3

complete list of authors

• Kowalski, CJ||Schneiderman, ED||Willis, SM

publication date

• January 1994

publisher

• Elsevier  Publisher

published in

• Computers in Biology and Medicine  Journal

keywords

• Algorithms
• Bias
• Child
• Forecasting
• Humans
• Kinetics
• Likelihood Functions
• Male
• Mandible
• Microcomputers
• Models, Statistical
• Reproducibility Of Results
• Software

Digital Object Identifier (DOI)

• 10.1016/0010-4825(94)90046-9

start page

• 485

end page

• 492

volume

• 24

issue

• 6

URL

• http://dx.doi.org/10.1016/0010-4825(94)90046-9