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Table 6 Multiple prediction model of different risk factor combinations (reference group: vocational school students with 0 or 1 risk factor)

From: Predictors of hazardous drinking, tobacco smoking and physical inactivity in vocational school students

Variable

Hazardous drinking & tobacco smoking

Hazardous drinking & physical inactivity

Tobacco smoking & physical inactivity

Hazardous drinking & tobacco smoking & physical inactivity

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

Gender: Male (ref.)

    

 Female

0.69 (0.56-0.86)**

1.77 (1.22-2.58)**

4.67 (2.61-8.35)**

1.93 (1.44-2.59)**

Age: 15-16 years (ref.)

    

 17-18 years

1.25 (0.95-1.66)

2.15 (1.25-3.72)**

1.47 (0.65-3.31)

1.51 (0.94-2.45)

 19-20 years

1.38 (1.00-1.90)

1.92 (1.06-3.48)*

1.88 (0.86-4.10)

2.12 (1.23-3.66)**

 21 years or older

1.36 (0.85-2.18)

2.46 (1.12-5.41)*

3.12 (1.17-8.31)*

2.96 (1.54-5.72)**

Educational attainment: No grade (ref.)

    

 Secondary school

0.56 (0.34-0.91)*

0.46 (0.19-1.10)

0.43 (0.11-1.67)

2.55 (0.64-10.18)

 Extended secondary school

0.62 (0.35-1.08)

0.47 (0.18-1.24)

0.49 (0.11-2.18)

2.40 (0.57-10.10)

 Technical or high school

0.59 (0.31-1.13)

0.83 (0.26-2.60)

0.09 (0.01-1.12)

2.51 (0.56-11.29)

Immigrant background: No (ref.)

    

 One parent born outside Switzerland

1.18 (0.93-1.51)

1.18 (0.76-1.81)

1.65 (0.85-3.20)

1.48 (1.00-2.20)

 Both parents born outside Switzerland

0.53 (0.41-0.68)**

0.52 (0.34-0.81)**

2.41 (1.47-3.95)**

0.80 (0.58-1.09)

  1. Note: *p < .05, **p < .01. OR = Odds Ratio; CI = Confidence Interval.