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Table 2 Odds of depressive symptoms in 2001 by health and health behaviours (results of univariable logistic regression analysis).

From: Physical activity and depressive symptoms in adolescents: a prospective study

  OR 95% CI Pvalue for model N
Physical activity, h/week:     
None 1   0.003 2,705
About 0.5 h 0.94 0.71 to 1.25   
About 1 h 0.9 0.67 to 1.21   
About 2-3 h 0.67 0.49 to 0.91   
About 4-6 h 0.58 0.37 to 0.90   
More than 7 h 0.48 0.30 to 0.77   
Physical activity, h/week (continuous variable) 0.89 0.85 to 0.93 <0.0001 2,705
General health:     
Very good 1   <0.0001 2,717
Good 1.15 0.90 to 1.47   
Fair 1.65 1.36 to 2.00   
Bad 3.81 2.17 to 6.67   
Very bad 5.23 1.82 to 15.00   
Presence of long-standing illness/disability:     
No 1   0.003 2,648
Yes 1.4 1.13 to 1.73   
Body mass index:     
Below 85th percentile 1   0.006 2,462
85th-95th percentile (overweight) 1.04 0.72 to 1.49   
Over 95th percentile (obese) 1.45 1.17 to 1.81   
Cigarette smoking:     
Never smoked 1   0.021 2,704
Less than 1 a week 1.39 1.05 to 1.84   
1 or more a week 1.84 1.13 to 2.98   
Units alcohol drunk last week:     
Did not drink last week 1   0.037 2,679
1-5.5 units 1.06 0.59 to 1.89   
More than 6 units 3.18 1.32 to 7.68   
Ever tried drugs:     
No 1   0.001 2,719
Yes 1.49 1.21 to 1.84   
Daily portions fruit and vegetables:     
0-2 1   0.045 2,588
3-4 0.91 0.72 to 1.15   
5 or more 1.15 0.89 to 1.48   
  1. OR = odds ratio.