Table 4

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
    Mixed1.42 (0.36 to 5.62)
    Asian1.62 (0.65 to 4.02)
    Black0.36 (0.08 to 1.53)
Feelings about school (vs. neutral)2.3, 4, 0.68
    Like a lot1.36 (0.42 to 4.37)
    Like a bit1.01 (0.46 to 2.25)
    Dislike a bit0.52 (0.18 to 1.53)
    Dislike a lot0.82 (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
    Troublemaker0.83 (0.37 to 1.87)
    Quiet3.94 (1.16 to 13.32)
    Loner1.25 (0.22 to 7.16)
    None of the above1.84 (0.13 to 25.82)
Music preference (v everything else)0.5, 1, 0.48
    Hard core0.79 (0.41 to 1.51)
Smoking pattern (v alone only)26.4, 3, <0.001
    Undefined5.58 (1.49 to 20.89)
    Alone and with friends0.16 (0.04 to 0.60)
    With friends only0.35 (0.16 to 0.76)