Patient risk profiles and practice variation in nonadherence to antidepressants, antihypertensives and oral hypoglycemics

Table 3 Refill adherence to oral hypoglycemics: differences between adherent and nonadherent patients

	Bivariate analyses		Multilevel logistic analysis (multivariate; 0 = adherent; 1 = nonadherent)
	Nonadherent patients	Adherent patients	Oddsratio^a)	95% CI
Socio-demographic characteristics
- age in years (mean; SD)	66.6 (13.4)	65.8 (11.9)	1.01	[0.99–1.03]
- % woman	59.2	52.9	1.22	[0.82–1.82]
- % college/university	6.6	8.4	0.85	[0.40–1.82]
- % non-western	9.9	7.1	1.49	[0.76–2.91]
- % private insurance	19.7	23.9	0.75	[0.47–1.22]
- % living together	63.8*	73.5	0.65*	[0.43–0.97]
- % with job/study	19.1	17.9	1.68	[0.94–3.00]
Use of medication
Complex regime
number of other ATCs (mean;sd)	8.4 (6.0)	7.5 (5.3)	1.04	[0.99–1.08]
Health & morbidity in general practice
Self-reported health
% excellent/good	36.2	44.0*	0.75	[0.51–1.11]
Diagnoses for which GP is consulted (% of patients)
Diabetes (T90)	84.2	88.2	0.69	[0.41–1.17]
Hypertension (K85–K87)	28.9	32.7	0.77	[0.51–1.17]
Other diagnoses in K-chapter (from K70–K99)	21.1	25.8	0.60*	[0.37–0.98]
Hypercholesterolemia (T93)	11.2	11.9	0.96	[0.52–1.77]
GP consultation for chronic diseases and overall contact
Number of other chronic complaints (mean, SD)	0.7 (0.9)	0.7 (1.0)	0.87	[0.70–1.07]
Number of contacts with GP (mean; SD)	12.7 (10.8)	12.3 (9.9)	1.01	[0.98–1.03]
Total (%)	6.9
Number of patients (N)	152	2,042	2,194

* P < 0.05
a) odds ratio > 1: more likely to be nonadherent; odds ratio < 1: less likely to be nonadherent

ISSN: 1472-6963