Odds ratios for obtaining cigarettes usually by social source compared to retail source*
| OR (95% CI) | χ2, df, p value§ | |
|---|---|---|
| *All odds ratios (OR) shown are adjusted for smoking status (occasional v regular) except smoking status itself. | ||
| †For a 1 year increase. | ||
| ‡Other deleted. The estimates were unstable. | ||
| §χ2 Wald test from logistic regression equation for inclusion of term. | ||
| CI, confidence interval. | ||
| Smoking status | ||
| Occasional smoker (v regular smoker) | 12.09 (6.08 to 24.05) | 50.4, 1, <0.001 |
| Sex | ||
| Female (v male) | 0.86 (0.46 to 1.62) | 0.2, 1, 0.64 |
| Age (in years)† | 0.88 (0.56 to 1.38) | 0.3, 1, 0.58 |
| Ethnicity (v white)‡ | 3.6, 3, 0.31 | |
| Mixed | 1.42 (0.36 to 5.62) | |
| Asian | 1.62 (0.65 to 4.02) | |
| Black | 0.36 (0.08 to 1.53) | |
| Feelings about school (vs. neutral) | 2.3, 4, 0.68 | |
| Like a lot | 1.36 (0.42 to 4.37) | |
| Like a bit | 1.01 (0.46 to 2.25) | |
| Dislike a bit | 0.52 (0.18 to 1.53) | |
| Dislike a lot | 0.82 (0.30 to 2.27) | |
| Truanting (v no to truanting) | 0.26 (0.11 to 0.62) | 9.5, 1, 0.002 |
| Friendship identity (v popular) | 5.7, 4, 0.22 | |
| Troublemaker | 0.83 (0.37 to 1.87) | |
| Quiet | 3.94 (1.16 to 13.32) | |
| Loner | 1.25 (0.22 to 7.16) | |
| None of the above | 1.84 (0.13 to 25.82) | |
| Music preference (v everything else) | 0.5, 1, 0.48 | |
| Hard core | 0.79 (0.41 to 1.51) | |
| Smoking pattern (v alone only) | 26.4, 3, <0.001 | |
| Undefined | 5.58 (1.49 to 20.89) | |
| Alone and with friends | 0.16 (0.04 to 0.60) | |
| With friends only | 0.35 (0.16 to 0.76) | |