Delayed sleep onset in depressed young people

Table 2 Multivariate associations of demographic and clinical factors with delayed sleep onset phenotype in depressed young people ( n = 302)

	(i) Base Model C-S R ^2.= .004		(ii) Adding education & personality C-S R ² = .033		(iii) Adding Substance Use C-S R ² = .066
	OR	95% CI	OR	95% CI	OR	95% CI
Age	1.0	0.9 - 1.1	0.9	0.9 - 1.1	0.9	0.8 - 1.1
Gender	1.5	0.8 - 2.8	1.3	0.7 - 2.5	1.3	0.7 - 2.6
Not in education			2.0	1.0 - 3.8	1.9	0.9 - 3.6
Fun-seeking			0.9	0.8 - 1.0	0.9	0.8 - 1.1
Cannabis Risk					1.0	.05 - 2.0
Alcohol Risk					1.8	0.9 - 3.8
Tobacco Risk					2.3	1.0 - 5.0

Bold = p < .05. Step 1: Nag R ² = .01, -2LL: 285.30, Model χ ² (2) = 1.35, p = .51. Step 2: Δχ² = 4.33, Nag R ² = .05, -2LL: 276.41, Model χ ² (4) = 10.25, p = .04. Step 3: Δχ² = 4.24, Nag R ² = .11, -2LL: 266.03, Model χ ² (7) = 20.62, p < .01.