Table 3.
Conditional logistic regression analyses predicting drinking, accessing alcohol without supervision and engaging in risky drinking practices
| All | Drinkers only | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Unsupervised consumption and access | Excess drinking | ||||||||
| Drink alcohol | Unsupervised inside drinking | Outside drinking (streets, parks, shops) | Self-purchase | Take from parents | Proxy purchase | Frequent drinking§ | Heavy drinking§ | ||
| n (% yes) | 11,879 (82.3%) | 9,720 (57.4%) | 9,720 (29.8%) | 9,549 (25.5%) | 9,549 (8.5%) | 9,549 (11.9%) | 9,766 (22.4%) | 9,664 (54.7%) | |
| AOR (95%CI) | AOR (95%CI) | AOR (95%CI) | AOR (95%CI) | AOR (95%CI) | AOR (95%CI) | AOR (95%CI) | AOR (95%CI) | ||
| Age | 15 | Ref* | Ref* | ns | Ref*** | ns | Ref* | Ref* | Ref*** |
| 16 | 1.13(1.02-1.25) | 1.11(1.01-1.21) | 1.51(1.37-1.67) | 0.83(0.73-0.96) | 1.12(1.01-1.24) | 1.29 (1.18-1.41) | |||
| Sex | Female | Ref*** | Ref*** | Ref*** | ns | Ref** | Ref*** | Ref*** | Ref* |
| Male | 0.55(0.49-0.61) | 0.69(0.63-0.75) | 1.23(1.11-1.36) | 0.80(0.68-0.93) | 1.36(1.18-1.56) | 1.43(1.28-1.59) | 1.11(1.02-1.22) | ||
| Deprivation IMD^ score | < = 10 (affluent) | Ref*** | Ref** | ns | ns | Ref** | Ref** | Ref** | ns |
| >10-20 | 0.92(0.78-1.08) | 0.88(0.78-1.00) | 0.79(0.64-0.98) | 1.04(0.84-1.30) | 0.93(0.79-1.08) | ||||
| >20-30 | 0.73(0.61-0.88) | 0.89(0.76-1.04) | 0.87(0.674-1.12) | 1.13(0.88-1.45) | 1.05(0.87-1.25) | ||||
| >30-40 | 0.65(0.54-0.78) | 0.75(0.63-0.88) | 0.53(0.39-0.73) | 1.28(0.99-1.66) | 0.90(0.74-1.09) | ||||
| >40 (poor) | 0.57(0.48-0.66) | 0.81(0.71-0.92) | 0.87(0.70-1.09) | 1.50(1.18-1.81) | 1.20(1.03-1.41) | ||||
| Expendable income | > = £10 | Ref*** | Ref*** | Ref*** | Ref*** | ns | Ref* | Ref*** | Ref*** |
| £11-20 | 1.53(1.36-1.73) | 1.50(1.34-1.67) | 1.28(1.13-1.45) | 1.45(1.27-1.65) | 1.14(0.96-1.36) | 1.32(1.16-1.50) | 1.49(1.34-1.67) | ||
| £21-30 | 2.04(1.70-2.44) | 1.45(1.27-1.67) | 1.23(1.05-1.44) | 2.34(2.01-2.73) | 1.17(0.94-1.46) | 1.63(1.39-1.92) | 1.82(1.58-2.10) | ||
| >£30 | 2.94(2.47-3.49) | 1.63(1.45-1.85) | 1.55(1.36-1.77) | 3.07(2.69-3.50) | 1.35(1.13-1.63) | 2.05(1.78-2.35) | 2.43(2.14-2.76) | ||
| Hobby | No | Ref** | ns | Ref *** | ns | ns | ns | Ref*** | Ref*** |
| /Sport | Yes | 1.17(1.05-1.30) | 0.78(0.70-0.86) | 0.77(0.68-0.86) | 0.76(0.69-0.84) | ||||
| Parents | No | Ref* | Ref*** | Ref*** | ns | Ref*** | Ref*** | Ref*** | |
| Provide | Yes | 0.91(0.83-0.99) | 0.44(0.39-0.48) | 0.48(0.44-0.53) | 0.37(0.31-0.43) | 0.79(0.71-0.88) | 0.59(0.54-0.65) | ||
| Peer | No | Ref*** | Ref** | ns | Ref** | ns | Ref** | ns | |
| Pressure | Yes | 1.57(1.41-1.74) | 1.20(1.05-1.32) | 1.25(1.06-1.47) | 0.81(0.72-0.92) | ||||
| Boredom | No | Ref*** | Ref*** | Ref*** | Ref*** | Ref*** | Ref*** | Ref*** | |
| Yes | 1.31(1.18-1.46) | 3.72(3.34-4.15) | 1.50(1.34-1.67) | 1.94(1.65-2.27) | 3.33(2.90-3.82) | 2.68(2.39-3.00) | 2.94(2.63-3.29) | ||
Logistic regression techniques used a backwards conditional model. This method also controlled for local authority of school (n = 21). Local Authority AORs have not been displayed due to space but were significant for all outcome measures. § drinking frequently = >1 session/week; drinking heavily = drink ≥5 drinks/session ≥1 per month. ^IMD = Index of multiple deprivation. AOR = Adjusted Odds Ratio. Ref = Reference category. 95% CI = 95% confidence intervals. ns = Not significant. Reported P values are * <0.05 ** <0.01 *** <0.001. Comparator groups for dependent variables in unsupervised consumption and access are, respectively, drinkers who do not: typically drink unsupervised inside; typically drink outside (in streets, parks and shops); buy their own alcohol; take alcohol from their parents without permission or; proxy purchase. For frequent drinking the reference group is drinkers who do not drink >1 session/week and for heavy drinking, drinkers who do not drink ≥5 drinks/session ≥1 per month.