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Table 5 Mental health problems and health behaviour in the10 th grade as predictors of non-completion of upper secondary school in girls (n = 4751)

From: Mental health problems in the 10thgrade and non-completion of upper secondary school: the mediating role of grades in a population-based longitudinal study

  Crude Model 1a Model 2b Model 3c
  OR 95% CI OR 95% CI OR 95% CI OR 95% CI
SDQ externalising (per 2 points) 1.59 1.51 1.66* 1.48 1.41 1.56* 1.44 1.36 1.52* 1.31 1.24 1.39*
SDQ internalising (per 2 points) 1.29 1.24 1.35* 1.21 1.16 1.27* 1.08 1.03 1.14* 1.09 1.04 1.15*
Health behaviour             
Smoking             
  No ref.   *        ref.   *
  Sometimes 1.46 1.21 1.77        1.30 1.05 1.62
  Yes, every day 4.75 4.01 5.62        2.77 2.23 3.45
Alcohol last year             
  Never ref.   *        ref.   
  A few times last year 0.85 0.70 1.04        0.83 0.66 1.05
  1–3 times a month 1.36 1.13 1.64        0.88 0.69 1.13
  Once a week or more 1.92 1.53 2.41        0.93 0.68 1.26
Physical activity             
  0 hours per week ref.   *        ref.   *
  1–2 hours per week 0.77 0.63 0.95        1.12 0.89 1.43
  3–4 hours per week 0.49 0.39 0.61        0.85 0.66 1.10
  5–7 hours per week 0.34 0.27 0.44        0.65 0.49 0.86
  8 hours or more per week 0.41 0.31 0.54        0.78 0.57 1.07
  1. aModel 1: SDQ externalising and SDQ internalising separately, adjusted for ethnic background, county of residence, parents’ education, income and marital status.
  2. bModel 2: SDQ externalising and SDQ internalising adjusted for each other, and for ethnic background, county of residence, parents’ education, income and marital status.
  3. cModel 3: Like model 2, in addition adjusted for health behaviours.
  4. *p ≤ 0.001.