Paper
Saturday, 22 July 2006
This presentation is part of : Measurement and Instrument Development
Comparing Effects of a Feeding Skills Training Program by Using Repeated Measures ANOVA and Individual Regression Analysis
Chia-Chi Chang, PhD, RN, Nursing, China Medical University, Taichung, Taiwan and Elizabeth A. Madigan, PhD, RN, Frances Payne Bolton School of Nursing, Case Western Reserve University, Cleveland, OH, USA.
Learning Objective #1: understand the difference in using repeated measures ANOVA and IRA
Learning Objective #2: understand how to apply the IRA in nursing research.
Repeated measures ANOVA and individual regression analysis (IRA) are both used in the analysis of longitudinal data. The data from Chang et al (2005) study was used to illustrate the similarities and differences between the two methods. The purpose of the study was to test the effects of a feeding skills training program on nursing assistants’ knowledge, attitude, perceived behavior control, and intention toward feeding dementia patients. The findings from repeated measures ANOVA concluded that treatment group had better knowledge (F=56, p< 0.001) and greater intention (intention freq.: F=3.1, p=0.05) than control group after the training. However, no conclusions can be drawn regarding direction magnitude, and timing of the change. Results from IRA indicated that there were significantly different pattern of change on knowledge (t=-4.8, p< 0.001), attitude (t=1.8, p=0.07), perceived behavior control (t=1.9, p=0.06), and intention (intention freq.: t=-2.3, p=0.02; intention beliefs: t=-2.7, p=0.01) between two groups such that the treatment group outcomes were more positive. The differences between two methods should be examined at both the theoretical and practical levels. IRA was recommended for future nursing studies and the use of both methods as complementary is also suggested for the future studies.

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