This study aims to predict adherence to diabetic treatment regimens an
d sustained diabetic control. During two clinic visits that were 2 mon
ths apart, 63 adult outpatients completed measures of diabetic history
, current treatment, diabetic control, adherence, and self-efficacy ab
out adherence to treatment. Results showed that self-efficacy was a si
gnificant predictor of later adherence to diabetes treatment even afte
r past levels of adherence were taken into account. Posttest levels of
adherence in turn were significantly associated with posttest %HbA1c
after control for illness severity. A stepwise multiple regression to
predict %HbA1c at post entered pretest measures of diabetic control, t
reatment type, and self-efficacy, which together predicted 50% of the
variance. Results are related to self-efficacy theory and implications
for practice are discussed.