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Table 3 Negative binomial regression of personal negative consequences with drinking frequency, sex, age, drinking onset as independent variablesa

From: Problem drinking among Flemish students: beverage type, early drinking onset and negative personal & social consequences

  Beer Wine Non-distilled beverages Spirits
  b (SE) Incident rate ratio Exp (b) 95% CI b (SE) Incident rate ratio Exp (b) 95% CI b (SE) Incident rate ratio Exp (b) 95% CI b (SE) Incident rate ratio Exp (b) 95% CI
Intercept 0.78 (0.11) 2.19*** 1.76-2.73 0.68 (0.11) 1.98*** 1.58-2.47 0.68 (0.17) 1.98*** 1.43-2.75 0.92 (0.13) 2.52*** 1.97-3.21
Drinking frequencyb
 Daily 1.30 (0.06) 3.67*** 3.27-4.11 0.52 (0.13) 1.68*** 1.30-2.17 −0.09 (0.55) 0.92 0.31-2.69 0.81 (0.24) 2.26*** 1.40-3.63
 More than once a week, less than daily 1.16 (0.03) 3.20*** 3.01-3.41 0.36 (0.04) 1.43*** 1.33-1.54 0.02 (0.08) 1.02 0.86-1.20 0.48 (0.05) 1.62*** 1.48-1.78
 Once a week 0.81 (0.03) 2.24*** 2.10-2.39 0.27 (0.30) 1.31*** 1.24-1.39 0.04 (0.05) 1.04 0.95-1.15 0.39 (0.03) 1.47*** 1.38-1.57
 Less than once a week, more than once a month 0.40 (0.03) 1.49*** 1.40-1.59 0.19 (0.02) 1.21*** 1.16-1.27 −0.01 (0.03) 1.00 0.94-1.05 0.27 (0.02) 1.31*** 1.26-1.37
Sexb
 Woman −0.07 (0.02) 0.93*** 0.89-0.97 −0.09 (0.02) 0.92*** 0.88-0.96 −0.08 (0.03) 0.93** 0.88-0.98 −0.13 (0.02) 0.88*** 0.84-0.92
Age −0.02 (0.01) 0.98** 0.98-0.99 −0.02 (0.00) 0.98*** 0.97-0.99 −0.03 (0.01) 0.97*** 0.96-0.98 −0.02 (0.00) 0.98*** 0.97-0.99
Drinking onsetb
 > 18 −0.45 (0.08) 0.64*** 0.54-0.75 −0.23 (0.06) 0.79*** 0.71-0.89 −0.14 (0.06) 0.87* 0.78-0.98 −0.40 (0.05) 0.67*** 0.61-0.74
 18 −0.38 (0.06) 0.68*** 0.61-0.76 −0.10 (0.04) 0.90* 0.83-0.98 −0.05 (0.05) 0.96 0.86-1.06 −0.27 (0.04) 0.76*** 0.70-0.83
 17 −0.41 (0.04) 0.67*** 0.62-0.72 −0.09 (0.03) 0.92* 0.86-0.98 −0.04 (0.05) 0.96 0.87-1.07 −0.16 (0.04) 0.85*** 0.78-0.92
 16 − 0.25 (0.03) 0.78*** 0.74-0.82 − 0.02 (0.03) 0.98 0.94-1.04 0.02 (0.05) 1.02 0.92-1.13 −0.08 (0.04) 0.93 0.85-1.00
 15 −0.04 (0.02) 0.96 0.91-1.01 0.06 (0.03) 1.07* 1.01-1.13 0.09 (0.06) 1.10 0.98-1.24 −0.00 (0.05) 1.00 0.91-1.09
  1. aOther control variables: using tranquilizers and sedatives, stimulant medication, cannabis, amphetamines, ecstasy and cocaine; institution; living situation
  2. bThe reference categories for drinking frequency, sex and drinking onset are ‘less than once a month’, ‘Man’ and ‘< 15 years’ respectively
  3. Significance levels: * p < 0.05; ** p < 0.01; *** p < 0.001