# Table 4 Univariate analysis (unadjusted results) of drug counts by socio-economic position variables

Socio-economic marker Drug counts age 0-9
Number of drugs/person Rate ratio (95% CI) p-value
Mother’s education O level or lower 1107/69 = 16.0 1.00 p = 0.4
A level or degree 195/14 = 13.9 0.87 (0.64, 1.18)
Father’s education O level or lower 902/53 = 17.0 1.00 p = 0.04
A level or degree 400/30 = 13.3 0.78 (0.62, 0.99)
Family social class I, II, III non-manual 506/33 = 15.3 1.00 p = 0.8
III manual, IV V 796/50 = 15.9 1.04 (0.82, 1.32)
Housing tenure (in pregnancy) Owned/mortgaged 1096/69 = 15.9 1.00 p = 0.3
Other 206/14 = 14.7 0.93 (0.68, 1.26)
Family adversity index 0 498/31 = 16.1 1.00 p = 0.6
1 404/25 = 16.2 } 0.97 (0.88, 1.09)
2 199/14 = 14.2
≥3 201/13 = 15.5
Townsend score (quintile) 1st (least deprived) 404/25 = 16.2 1.00 p = 0.9
2 250/18 = 13.9 } 1.00 (0.95, 1.04)2
3 309/18 = 17.2
4 & 5th (most deprived)1 339/22 = 15.4
Drug counts age 10-18
Number of drugs/person Rate ratio p-value
Mother’s education O level or lower 758/95 = 8.0 1.00 p = 1.0
A level or degree 410/51 = 8.0 1.01 (0.79, 1.28)
Father’s education O level or lower 634/75 = 8.5 1.00 p = 0.3
A level or degree 534/71 = 7.5 0.89 (0.71, 1.12)
Family social class I, II, III non-manual 601/80 = 7.5 1.00 p = 0.3
III manual, IV V 567/66 = 8.6 1.14 (0.91, 1.44)
Housing tenure Mortgaged/owned 922/113 =8.2 1.00 p = 0.5
Other 246/33 = 7.5 0.91 (0.69, 1.21)
Family adversity index 0 452/63 = 7.2 1.00 p = 0.2
1 430/49 = 8.8 } 1.07 (0.96, 1.21)
2 151/19 = 7.9
≥3 135/15 = 9.0
Townsend score (quintile) 1st (least deprived) 414/54 = 7.7 1.00 p = 0.6
2 152/23 = 6.6 } 1.01 (0.97, 1.05)2
3 335/36 = 9.3
4 176/22 = 8.0
5th (most deprived) 91/11 = 8.3
1. 1. Groups combined as numbers small.
2. 2. Townsend score entered as a decile in the regression analysis.