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Table 6 Logistic regression analysis: significant predictors of drinking alcohol in the last 7 days among drinkers (Level 1 as reference category)

From: Prevalence, perceptions and predictors of alcohol consumption and abstinence among South Australian school students: a cross-sectional analysis

  Model 1
OR
n = 931
95% CI Model 2
OR
n = 926
95% CI Model 3
OR
n = 926
95% CI Model 4
OR
n = 690
95% CI Model 5
OR
n = 619
95% CI
Age (ref 13, 14 year olds)
 14–15 year olds 2.09* 1.01–4.36 1.90 0.95–3.80 1.88 0.94–3.76 1.38 0.55–3.44 1.44 0.48–4.30
 16–17 year olds 1.91 0.99–3.70 1.65 0.88–3.12 1.64 0.87–3.09 1.19 0.51–2.78 1.25 0.43–3.63
 Sex (ref: male) 1.01 0.79–1.30 1.08 0.82–1.41 1.09 0.83–1.42 0.96 0.71–1.30 0.94 0.68–1.30
Index of disadvantage (ref: most disadvantage)
 2nd quintile 0.97 0.64–1.47 1.00 0.65–1.52 1.00 0.65–1.53 1.03 0.61–1.71 0.91 0.52–1.59
 3rd quintile 0.67* 0.49–0.93 0.62* 0.44–0.87 0.62** 0.44–0.88 0.76 0.51–1.12 0.76 0.52–1.10
 4th quintile 1.09 0.66–1.79 1.13 0.69–1.85 1.13 0.69–1.85 1.19 0.70–2.02 1.07 0.59–1.92
 5th quintile 0.82 0.49–1.38 0.87 0.51–1.48 0.87 0.51–1.48 1.04 0.53–2.06 0.91 0.45–1.86
Available spending money per week (ref: none)
 $1–$40 1.40 0.76–2.57 1.58 0.80–3.13 1.58 0.80–3.12 1.23 0.56–2.70 1.05 0.46–2.38
 $41–$80 1.46 0.70–3.04 1.71 0.76–3.89 1.71 0.75–3.89 1.39 0.54–3.54 1.29 0.51–3.30
 $81–$120 1.45 0.73–2.86 1.48 0.70–3.10 1.48 0.70–3.10 1.18 0.49–2.84 0.94 0.41–2.15
 $121 and over 2.35** 1.24–4.42 2.79** 1.38–5.60 2.78** 1.38–5.58 2.56* 1.10–5.95 1.89 0.82–4.33
Self-reported ability at school (ref: a lot above average)
 Above average 0.89 0.51–1.54 0.86 0.48–1.54 0.86 0.48–1.54 0.86 0.40–1.84 0.78 0.35–1.75
 Average 0.91 0.47–1.76 0.79 0.39–1.60 0.79 0.39–1.59 0.76 0.32–1.82 0.58 0.23–1.43
 Below average 1.64 0.77–3.50 1.23 0.55–2.76 1.22 0.55–2.72 0.97 0.35–2.72 0.81 0.29–2.30
 A lot below average 2.37 0.71–7.90 1.13 0.39–3.31 1.14 0.39–3.32 0.82 0.18–3.75 0.62 0.12–3.34
Smoked in last week (ref: no)    5.89*** 3.36–10.34 5.86*** 3.33–10.31 5.17*** 2.72–9.84 4.00*** 2.11–7.56
Alcohol and cancer (ref: very/important)      1.09 0.77–1.55 1.11 0.75–1.65 1.13 0.75–1.70
Friends approval (ref: no)        1.08 0.62–1.86 1.04 0.60–1.79
Parental disapproval (ref: no)        0.74 0.54–1.01 0.74 0.54–1.02
Being able to buy alcohol easily encourages me to drink a lot (ref: no)          1.70* 1.09–2.65
  1. ***p ≤ 0.001, **p ≤ 0.01, *p < 0.05