Table 5.

Multivariate logistic regression results: associations of unintentional and intentional nonadherence with patients’ experiences and perceptions with regard to antidepressant use

Predictors	Nonadherence
	Unintentional	Intentional	MPR
	Odds ratio (95% CI)	Odds ratio (95% CI)	Odds ratio (95% CI)
Age	0.95 (0.91–0.99)†
Marital status
Not married/divorced/widow(er)	Reference
Married/living together	1.2 (0.4–4.2)
Duration of use			1.9 (1.04–3.5)*
Overall efficacy score	0.99 (0.92–1.06)
Convinced of efficacy score		0.9 (0.8–0.96)†
Number of side effects experienced			0.9 (0.7–1.0)
Emotional side effects
No	Reference	Reference
Yes	1.4 (0.5–4.2)	1.8 (0.9–4.0)
Number of practical problems experienced	1.3 (1.1–1.7)*	1.1 (0.9–1.3)
Taking self-efficacy (MUSE)	0.7 (0.5–0.9)†
Learning self-efficacy (MUSE)	1.2 (0.8–1.7)

Notes:

^*P<0.05

^†P<0.01.

Abbreviations: MPR, medication possession ratio; CI, confidence interval; MUSE, Medication Understanding and Use Self-Efficacy Scale.