Table 2.

Prediction of medication adherence (PDC ≥80%) by patient characteristics

Variable	Adjusted odds ratio*	95% confidence interval	P-value
Sex (female)	0.89	0.85–0.95	<0.001
Age in groups (years)
45–54	1.56	1.27–1.92	<0.001
55–64	1.78	1.47–2.17	<0.001
65–74	1.97	1.63–2.38	<0.001
75–84	1.65	1.36–2.00	<0.001
≥85	1.22	0.99–1.51	0.060
Managed care plan	1.01	0.95–1.07	0.885
High deductible class (>500 Swiss Francs)	0.71	0.63–0.81	<0.001
Preceding hospitalization	0.67	0.61–0.74	<0.001
Dispensing channel (PD)	0.98	0.91–1.06	0.548
Number of comorbidities
1	1.19	1.05–1.35	<0.010
2	1.30	1.15–1.46	<0.001
3	1.43	1.26–1.62	<0.001
4	1.35	1.18–1.54	<0.001
≥5	1.27	1.12–1.44	<0.001
Drug therapy
Metformin and another OAD	9.86	9.21–10.55	<0.001
Other combination of OADs	5.73	5.35–6.14	<0.001

Note:

^*Also controlled for cantons (coefficients not shown).

Abbreviations: OAD, oral antidiabetic drug; PD, physician dispensing; PDC, proportion of days covered.