Table 3.

Determinants of mental health care service utilization (reference category dependent variable: early treatment users)

	Delayed treatment users a
	Univariate analyses		Multivariate analyses
	Unadjusted OR d (95% CI e)	p	Adjusted OR d (95% CI e)	p
Socio-demographic factors b
Male	1.17 (0.65–2.12)	0.60	1.09 (0.58–2.04)	0.80
Younger age (18–44 years old)	1.37 (0.77–2.43)	0.28	1.26 (0.69–2.32)	0.45
Education (ref. higher professional education, university)
primary/lower secondary education	0.97 (0.47–2.02)	0.94	1.11 (0.50–2.46)	0.80
higher secondary education	1.03 (0.52–2.06)	0.93	1.13 (0.54–2.34)	0.75
Partner	0.83 (0.47–1.49)	0.54	0.78 (0.42–1.46)	0.43
Job	1.73 (0.91–3.28)	0.09	1.61 (0.80–3.25)	0.18
Need factors b
No comorbid anxiety disorder	1.38 (0.76–2.52)	0.29	1.13 (0.58–2.20)	0.71
Shorter duration episode past 12 months (<3 months)	1.16 (0.63–2.13)	0.64	0.92 (0.48–1.77)	0.82
Disability days on work and/or normal daily activities (<2 weeks)	2.37 (1.22–4.60)	0.01	1.85 (0.91–3.75)	0.09
Major depressive disorder between baseline and follow-up c	1.69 (0.97–3.21)	0.06	2.19 (1.16–4.13)	0.02
Severity depressive symptoms (ref. (very) severe)
none/mild	3.33 (1.57–7.10)	0.002	3.23 (1.41–7.38)	0.005
moderate	1.35 (0.65–2.77)	0.41	1.21 (0.57–2.59)	0.62
P for trend		0.003		0.02

In order to adjust for possible differences between the different cohorts, we added an identification variable for these cohorts in the regression models

^aReference category dependent variable: early treatment users

^bDeterminants recorded at baseline

^cDeterminant recorded between baseline and first measurement for the first cohort (T0-T1) and between T1-T2 for the second cohort

^d OR Odds ratio

^e CI Confidence Interval