RT Book, Section
A1 Portney, Leslie G.
A1 Watkins, Mary P.
SR Print(0)
ID 1138252815
T1 Measures of Association for Categorical Variables: Chi-Square
T2 Foundations of Clinical Research: Applications to Practice, 3e
YR 2017
FD 2017
PB McGraw-Hill Education
PP New York, NY
SN 9780803646575
LK fadavispt.mhmedical.com/content.aspx?aid=1138252815
RD 2022/12/06
AB Many research questions in clinical and behavioral science involve categorical variables that are measured on a nominal or ordinal scale. These questions usually deal with the analysis of proportions or frequencies within various categories. For instance, surveys often code responses that represent frequencies, such as the number of Yes-No responses to a series of items or the number of respondents who fall into certain age groups. We can then ask questions about the proportion of respondents that fall into each category. In descriptive studies we are often interested in how certain nominal variables are distributed. For example, we might want to determine the proportion of patients with right-sided or left-sided strokes who are functionally dependent or independent at discharge or the proportion of therapists who work in private practice versus institutional settings.