Table 2

Associations of underage alcohol drinking with medical consultation and hospitalisation

Crude OR (95% CI)Adjusted OR (95% CI)
Alcohol drinking (day/week)Model 1Model 2Model 3Model 4
Medical consultation
 Non-drinker11111
 <11.23 (1.14 to 1.33)***1.24 (1.16 to 1.32)***1.17 (1.08 to 1.26)***1.14 (1.06 to 1.23)**1.09 (1.00 to 1.19)*
 1–21.66 (1.44 to 1.90)***1.64 (1.44 to 1.86)***1.40 (1.22 to 1.61)***1.30 (1.13 to 1.50)***1.26 (1.07 to 1.49)**
 3–72.32 (2.00 to 2.69)***2.24 (1/89 to 2.65)***1.77 (1.46 to 2.15)***1.70 (1.41 to 2.06)***1.63 (1.36 to 1.95)***
 p for trend†<0.001<0.001<0.001<0.001<0.001
Hospitalisation
 Non-drinker11111
 <11.41 (1.26 to 1.59)***1.42 (1.27 to 1.59)***1.20 (1.08 to 1.35)**1.14 (1.02 to 1.28)*1.12 (0.99 to 1.28)
 1–23.10 (2.58 to 3.71)***2.87 (2.30 to 3.59)***1.95 (1.55 to 2.44)***1.68 (1.32 to 2.14)***1.64 (1.27 to 2.11)***
 3–74.66 (3.87 to 5.61)***4.09 (3.37 to 4.97)***2.63 (2.12 to 3.28)***2.38 (1.90 to 2.98)***2.42 (1.93 to 3.05)***
 p for trend†<0.001<0.001<0.001<0.001<0.001

  • Model 1: Adjusted for sex, age, parental education, housing type, family structure and school clustering effects.

  • Model 2: Additionally adjusted for smoking, illicit drug use and physical activity.

  • Model 3: Additionally adjusted for peer smoking, parental smoking and secondhand smoke exposure.

  • Model 4: Among students who did not report feeling anxious or depressed, and adjusting for Model 3 variables.

  • *p<0.05, **p<0.01, ***p<0.001.

  • †p for trend by treating alcohol drinking as 0, 1, 2 and 3.