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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.