Comparison of depression care provided in general practice in Norway and the Netherlands: registry-based cohort study (The Norwegian GP-DEP study)

Table 4 Likelihood^a of having follow-up consultation with GP, with GP and/or MHN, and of receiving antidepressant drug, during 12 months from index date, for a new depression episode^b in the Netherlands compared to Norway

	Follow-up consultation with GP^c				Follow-up consultation with GP and/or MHN^d				Antidepressant drug
Netherlands (Norway = reference)	Crude IRR	95% CI	Adj IRR^e	95% CI	Crude IRR	95% CI	Adj IRR^e	95% CI	Crude HR	95% CI	Adj HR^d	95% CI
All patients	0.72	0.71–0.74	0.73	0.71–0.74	0.99	0.97–1.01	1.00	0.98–1.01	1.41	1.39–1.43	1.32	1.30–1.34
Stratified for age group
18–39	0.64	0.62–0.66	0.64	0.63–0.66	0.92	0.89–0.94	0.92	0.89–0.94	1.37	1.33–1.42	1.39	1.34–1.43
40–59	0.71	0.69–0.73	0.71	0.69–0.73	0.98	0.95–1.01	0.98	0.95–1.01	1.50	1.46–1.53	1.50	1.46–1.53
60 +	0.95	0.91–0.98	0.95	0.92–0.99	1.20	1.15–1.25	1.21	1.16–1.26	1.11	1.07–1.14	1.10	1.07–1.14

GP General practitioner, MHN Mental health nurse
^aResults from negative binomial regression estimating incidence rate ratios (IRRs) with 95% confidence interval (CI). Results from Cox regression estimating hazard ratios (HRs) with 95% CI
^bTwelve-month washout for depression diagnosis in general practice and/or secondary care and/or antidepressant drug prescription prior to index date
^cFollow-up consultation with GP, regardless of whether the patient also received follow-up with MHN
^dFollow-up consultation with GP only, MHN only, or GP and MHN
^eEstimates for all patients are adjusted for gender, age, and comorbidity; estimates for age strata are adjusted for gender and comorbidity

ISSN: 1472-6963