A significant baseline HbA1c by group interaction (p < .04) required the retention of
the interactive model. Four t tests with a Bonferroni adjustment (p < .01) were performed
to analyze the group effect on baseline and follow-up mean HbA1c values, and the effect
of time on each group’s mean HbA1c. The mean HbA1c values did not differ between
groups at baseline (p = .32) or at follow-up (p = .76). The mean HbA1c values decreased
in both groups, but only the intervention group showed significant improvement from
baseline (M = 7.76, SD = 1.37) to follow-up (M = 7.28, SD = 1.29; p < .008). The control
group’s decrease from baseline (M = 7.45, SD = 1.58) to follow-up (M