Table 2

 Odds ratios (95% CI) from logistic regression analysis of smoking-induced deprivation on covariates (n = 6829)

Crude ORp ValueAdjusted ORp Value
Sex0.0020.315
    Male1.001.00
    Female1.17 (1.06 to 1.29)0.94 (0.83 to 1.06)
Age (years)<0.001<0.001
    18–242.03 (1.70 to 2.43)1.81 (1.45 to 2.26)
    25–391.28 (1.11 to 1.48)1.13 (0.95 to 1.36)
    40–541.19 (1.03 to 1.37)1.05 (0.88 to 1.24)
    >551.001.00
Minority status<0.0010.003
    White/English speaking1.001.00
    Non-white/English speaking1.41 (1.22 to 1.63)1.29 (1.09 to 1.53)
Education0.0330.312
    Low1.22 (1.04 to 1.44)0.93 (0.77 to 1.12)
    Medium1.23 (1.05 to 1.47)1.03 (0.85 to 1.25)
    High1.001.00
Income<0.001<0.001
    Low2.01 (1.76 to 2.30)1.81 (1.55 to 2.12)
    Medium1.32 (1.16 to 1.51)1.28 (1.10 to 1.48)
    High1.001.00
Country<0.001<0.001
    USA1.70 (1.46 to 1.98)1.45 (1.21 to 1.74)
    Canada1.76 (1.51 to 2.04)1.48 (1.24 to 1.76)
    UK1.001.00
    Australia2.09 (1.80 to 2.42)1.93 (1.63 to 2.29)
Heaviness of Smoking Index1.08 (1.04 to 1.11)<0.0011.08 (1.04 to 1.13)<0.001
Intention to quit<0.001<0.001
    No intention to quit1.001.00
    Intend to quit1.89 (1.67 to 2.13)1.40 (1.20 to 1.64)
Self-efficacy to quit0.8770.489
    Low self-efficacy1.001.00
    High self-efficacy0.99 (0.88 to 1.11)1.05 (0.92 to 1.19)
Functional value of smoking
    Makes socialising easier<0.0010.036
        Do not agree1.001.00
        Agree1.40 (1.25 to 1.57)1.16 (1.01 to 1.33)
    Helps control weight<0.001<0.001
        Do not agree1.001.00
        Agree1.33 (1.19 to 1.48)1.33 (1.17 to 1.50)
    Enjoy too much to give up<0.0010.644
        Do not agree1.001.00
        Agree0.84 (0.76 to 0.93)0.97 (0.85 to 1.10)
    Helps concentration0.374
        Do not agree1.001.000.768
        Agree1.05 (0.95 to 1.16)0.98 (0.86 to 1.12)
    Calms stress<0.0010.841
        Do not agree1.001.00
        Agree1.26 (1.10 to 1.45)1.02 (0.86 to 1.20)
    Important part of life0.0270.269
        Do not agree1.001.00
        Agree1.12 (1.01 to 1.24)1.08 (0.94 to 1.23)
Thoughts about …
    Harm of smoking<0.0010.007
        Not often1.001.00
        Often1.87 (1.69 to 2.07)1.24 (1.06 to 1.46)
    Danger of smoking<0.001<0.001
        Not often1.001.00
        Often1.85 (1.68 to 2.05)1.37 (1.17 to 1.60)
    Enjoyment in smoking0.0010.858
        Not often1.001.00
        Often1.19 (1.07 to 1.32)1.01 (0.89 to 1.15)
Think a lot about future<0.0010.003
    Do not agree1.001.00
    Agree1.67 (1.50 to 1.85)1.21 (1.07 to 1.37)
Perceived stress1.15 (1.13 to 1.17)p<0.0011.11 (1.09 to 1.13)<0.001
Number of friends who smoke1.10 (1.06 to 1.13)p<0.0011.06 (1.02 to 1.10)0.002