Data #3 for ANOVA

1. ANOVA

A randomized control trial was conducted to determine the effectiveness of a counseling intervention based on the Bowen system of the theory of marital conflict of couples in a family nursing practice. Marital conflict was measured using a 42 item Likert scale with a Cronbach's alpha of 0.95. The couples were placed in the control or intervention group using a random numbers table. The intervention group received eight weeks of the Bowen system of the theory of marital conflict therapy, and the control group received standard care. Marital conflict was measured with a pre-test and two post-tests (one immediately after the intervention and one month later). The significance level is p<0.05

Comparison of Couples Mean marital Conflict Scores

	MeanSD	MeanSD	MeanSD	Repeated measures of ANOVA,F,p	Repeated measures of ANOVA,F,p	Repeated measures of ANOVA,F,p
Marital Conflict	Pre-test	Post-test	Follow-up	Time	Group	Time-Group
Intervention	126.40 (5.79)	106.55 (11.12)	103.17 (12.48)	F=45.78	F=45.03	F=79.43
Control	126.55 (5.75)	128.45 (7.68)	130.25 (7.40)	p<0.001	p<0.001	p<0.001
p value	p=0.930	p<0.001	p<0.001
t-test	t=2.80	t=0.86	t=0.75

1. Describe the ANOVA test

2. Level of measurement needed

3.Why the ANOVA was used

4.Conclusions based on the interpretation of the statistical analysis of ANOVA test

a. Was the intervention successful with a change (higher or lower) in the marital conflict score in the intervention group, and how do you know?

b.Was there a significant difference between groups conflict scores at the beginning of the study?