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 |