Table 4.
Relationship between number of risk behaviours and measures of decreasing SES (imputed sample, n = 6406)
| SES measure | n | Number of risk behaviours |
Ordinal logistic regression models |
||||
|---|---|---|---|---|---|---|---|
| 0–1 | 2–3 | 4–6 | 7–13 | Unadjusted OR [95% CI] | Mutually adjusted OR [95% CI] | ||
| Parental social class | |||||||
| Professional | 1089 | 28.8% | 42.2% | 23.9% | 5.1% | 1.0 ref | 1.0 ref |
| Managerial | 2883 | 21.9% | 40.3% | 29.2% | 8.7% | 1.22 [1.15, 1.29], P < 0.001 | 1.06 [1.02, 1.11], P = 0.008 |
| Skilled non-manual | 1537 | 20.8% | 40.5% | 31.0% | 7.8% | ||
| Skilled manual and lower | 897 | 16.4% | 39.7% | 31.5% | 12.5% | ||
| Maternal educational attainment | |||||||
| Degree | 1153 | 27.4% | 40.3% | 25.9% | 6.4% | 1.0 ref | 1.0 ref |
| A-level | 1730 | 23.6% | 40.0% | 28.6% | 7.9% | 1.15 [1.09, 1.21], P < 0.001 | 1.04 [0.98, 1.11], P = 0.184 |
| O-level | 2178 | 19.8% | 41.1% | 30.0% | 9.1% | ||
| <O-level | 1345 | 19.0% | 40.6% | 30.7% | 9.7% | ||
| Quintiles of household equivalized income | |||||||
| High | 1537 | 24.9% | 41.2% | 27.4% | 6.6% | 1.0 ref | 1.0 ref |
| Middle high | 1409 | 24.8% | 39.8% | 28.3% | 7.1% | 1.12 [1.08, 1.16], P < 0.001 | 1.15 [1.07, 1.23], P < 0.001 |
| Middle | 1281 | 22.3% | 41.1% | 27.5% | 9.0% | ||
| Middle low | 1153 | 18.6% | 40.4% | 31.4% | 9.7% | ||
| Low | 1025 | 17.4% | 40.2% | 31.7% | 10.7% | ||
Ordinal regression models under the proportional odds assumption with a linear relationship for each SES predictor variable. P-values for contingency tables (not shown) derived from Chi-square statistics were all <0.001. P-values shown are derived from Wald tests. Percentages shown are row percents.
For the ‘mutually adjusted’ estimates, the effect of each SES measure has been adjusted for the other two SES measures.