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

From: Delayed sleep onset in depressed young people

  (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
  1. 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.