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Table 4 Negative binomial regression of social 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 0.71 (0.14) 2.03*** 1.53-2.69 0.60 (0.15) 1.82*** 1.36-2.44 0.56 (0.22) 1.74** 1.15-2.66 1.11 (0.16) 3.04*** 2.22-4.17
Drinking frequencyb
 Daily 1.35 (0.07) 3.87*** 3.39-4.42 0.50 (0.15) 1.65*** 1.24-2.18 0.47 (0.59) 1.60 0.51-5.04 1.35 (0.28) 3.84*** 2.24-6.60
 More than once a week, less than daily 1.10 (0.04) 3.00*** 2.76-3.26 0.10 (0.04) 1.11* 1.02-1.21 0.02 (0.10) 1.02 0.85-1.24 0.71 (0.05) 2.03*** 1.83-2.25
 Once a week 0.69 (0.04) 1.99*** 1.83-2.17 0.04 (0.04) 1.04 0.97-1.12 0.10 (0.06) 1.11 0.99-1.24 0.47 (0.04) 1.60*** 1.48-1.72
 Less than once a week, more than once a month 0.41 (0.04) 1.50*** 1.38-1.63 0.05 (0.03) 1.05 0.99-1.11 −0.08 (0.03) 0.92* 0.86-0.99 0.34 (0.03) 1.40*** 1.33-1.48
Sexb
 Woman −0.18 (0.03) 0.83*** 0.79-0.88 −0.18 (0.03) 0.83*** 0.79-0.88 −0.18 (0.03) 0.84*** 0.79-0.90 −0.24 (0.03) 0.79*** 0.75-0.83
Age −0.06 (0.01) 0.94*** 0.93-0.95 −0.07 (0.01) 0.94*** 0.93-0.95 −0.07 (0.01) 0.93*** 0.92-0.94 −0.07 (0.01) 0.93*** 0.92-0.94
Drinking onsetb
 > 18 −0.58 (0.11) 0.56*** 0.45-0.70 −0.23 (0.08) 0.79** 0.68-0.92 −0.27 (0.07) 0.76*** 0.66-0.87 −0.50 (0.06) 0.61*** 0.54-0.68
 18 −0.65 (0.08) 0.52*** 0.45-0.60 −0.31 (0.05) 0.74*** 0.66-0.82 −0.22 (0.06) 0.80*** 0.71-0.91 −0.47 (0.05) 0.62*** 0.56-0.69
 17 −0.50 (0.05) 0.61*** 0.55-0.68 −0.27 (0.04) 0.77*** 0.71-0.83 −0.21 (0.06) 0.81*** 0.72-0.92 −0.41 (0.05) 0.66*** 0.60-0.73
 16 −0.40 (0.03) 0.67*** 0.63-0.72 −0.16 (0.03) 0.85*** 0.80-0.90 −0.08 (0.06) 0.93 0.82-1.04 −0.28 (0.05) 0.75*** 0.69-0.83
 15 −0.13 (0.03) 0.88*** 0.83-0.93 −0.08 (0.03) 0.92* 0.86-0.98 0.07 (0.07) 1.07 0.93-1.22 −0.10 (0.05) 0.90 0.81-1.00
  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