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Table 3 Main method of obtaining alcohol for drinkers (11-17 years) using chi square and multinomial logistic regression

From: Parental knowledge of alcohol consumption: a cross sectional survey of 11–17 year old schoolchildren and their parents

   df n Parents* Friends Shop Other
     % (95% CI) % (95% CI) AOR P % (95% CI) AOR P % (95% CI) AOR P
AOR (95% CI) AOR (95% CI) AOR (95% CI)
Gender Male 3 214 53.7% (46.8-60.6) 17.3% (12.5-23.0)   15.0% (10.5-20.4)   14.0% (9.7-19.4)  
0.1 (0.0-0.6) 0.005 0.3 (0.1-1.3) 0.112 0.4 (0.1-1.6) 0.194
Female   102 37.3% (27.9-47.4) 37.3% (27.9-47.4)   13.7% (7.7-22.0)   12.0% (6.4-20.0)  
Ref   Ref   Ref  
Age 11-14 3 108 56.5% (46.2-66.0) 22.2% (14.8-31.2)   8.3% (3.9-15.2)   13.0% (7.3-20.8)  
0.3 (0.1-0.8) 0.013 0.2 (0.0-0.6) 0.008 0.6 (0.2-1.6) 0.287
15-17   208 44.2% (37.4-51.3) 24.5% (18.8-30.9)   17.8% (12.8-23.7)   13.5% (9.1-18.9)  
Ref   Ref   Ref  
Deprivation quintile 1 (most affluent) 12 31 38.7% (21.8-57.8) 38.7% (21.8-57.8)   12.9% (3.6-29.8)   9.7% (2.0-25.8)  
2.3 (0.7-8.3) 0.189 1.7 (0.4-7.6) 0.504 2.6 (0.5-14.4) 0.259
2   42 52.4% (36.4-68.0) 26.2% (13.9-42.0)   7.1% (1.5-19.5)   14.3% (5.4-28.5)  
1.7 (0.6-4.9) 0.312 0.4 (0.1-1.6) 0.193 1.4 (0.4-4.8) 0.574
3   52 50.0% (35.8-64.2) 19.2% (9.6-32.5)   21.2% (11.1-34.7)   9.6% (3.2-21.0)  
1.4 (0.5-3.8) 0.544 1.5 (0.6-4.1) 0.397 1.0 (0.3-3.6) 0.946
4   51 41.2% (27.6-55.8) 27.5% (15.9-41.7)   11.8% (4.4-23.9)   19.6% (9.8-33.1)  
2.7 (1.0-7.5) 0.070 0.8 (0.3-2.7) 0.748 2.4 (0.8-7.3) 0.118
5 (most deprived)   72 55.6% (43.4-67.3) 16.7% (8.9-27.3)   16.7% (8.9-27.3)   11.1% (4.9-20.7)  
Ref   Ref   Ref  
School School A 9 47 42.6% (28.3-57.8) 23.4% (12.3-38.0) 0.396 19.1% (9.1-33.3) 0.467 14.9% (6.2-28.3) 0.777
0.6 (0.2-2.1)   1.6 (0.5-5.1)   0.8 (0.2-2.8)  
School B   51 49.0% (34.8-63.4) 21.6% (11.3-35.3) 0.282 13.7% (5.7-26.3) 0.296 15.7% (7.0-28.6) 0.663
0.4 (0.1-2.1)   2.7 (0.4-17.3)   0.7 (0.1-3.7)  
School C   52 42.3% (28.7-56.8) 44.2% (30.5-58.7) 0.307 7.7% (2.1-18.5) 0.199 5.8% (1.2-15.9) 0.069
0.4 (0.1-2.2)   0.3 (0.0-2.0)   0.1 (0.0-1.2)  
School D   166 51.8% (43.9-59.6) 18.1% (12.5-24.8)   15.7% (10.5-22.1)   14.5% (9.5-20.7)  
Ref   Ref   Ref  
Parental knowledge of consumption Yes 3 256 48.5% (42.3-54.7) 21.8% (16.9-27.2) 0.007 16.0% (11.8-21.0) 0.457 13.7% (9.8-18.5) 0.629
Ref   Ref   Ref  
No   54 48.1% (34.3-62.2) 33.3% (21.1-47.5)   7.4% (2.1-17.9)   11.1% (4.2-22.6)  
3.6 (1.4-9.3)   0.6 (0.2-2.3)   1.4 (0.4-4.8)
Total    316 48.4% (42.8-54.1) 23.7% (19.2-28.8)   14.6% (10.9-18.9)   13.3% (9.7-17.5)  
  1. P values for the univariate analyses are as follows: gender P = 0.001, age P = 0.081, deprivation P = 0.318, school P = 0.036, parental knowledge p = 0.168. * Provision of alcohol by parents represents the reference category in the outcome variable of the multinomial regression. Ref refers to the reference category of the predictor variable.