Analyzing Group by Time Effects in Longitudinal Two-Group Randomized Trial Designs With Missing Data

Authors

James Algina, University of FloridaFollow
H. J. Keselman, University of ManitobaFollow
Abdul R. Othman, Universiti Sains, MalaysiaFollow

Abstract

We investigated bias, sampling variability, Type I error and power of nine approaches for testing the group by time interaction in a repeated measures design under three types of missing data mechanisms. One procedure due to Overall, Ahn, Shivakumar, and Kalburgi (1999) performed reasonably well over a range of conditions.

DOI

10.22237/jmasm/1051747560