Table 3

Explanatory variables included in the final multivariable logistic regression analyses.

Multivariable analyses OR (95% CI)Multivariable analyses OR (95% CI)Interaction with sex
Men n=11 724Women n=18 184p Value
Smoking cessation intervention
 Come & Quit11
 Gold Standard Programme1.69 (1.27 to 2.24)1.31 (1.03 to 1.68)0.079
 Health promotion counselling2.64 (1.21 to 5.72)0.48 (0.17 to 1.34)0.013*
 Crash courses1.08 (0.58 to 2.02)0.49 (0.28 to 0.87)0.054
 Other1.50 (1.09 to 2.06)1.20 (0.91 to 1.58)0.244
Participants
Age (years)
 15–24 years11
 25–34 years1.22 (0.91 to 1.62)1.29 (1.06 to 1.57)0.918
 35–44 years1.37 (1.04 to 1.80)1.28 (1.06 to 1.55)0.413
 45–54 years1.49 (1.14 to 1.96)1.31 (1.08 to 1.57)0.193
 55+ years1.48 (1.13 to 1.94)1.35 (1.12 to 1.63)0.337
Disadvantaged smokers†
 No11
 Yes0.81 (0.73 to 0.89)0.82 (0.76 to 0.89)0.594
Heavy smokers‡
 No11
 Yes0.73 (0.65 to 0.81)0.65 (0.60 to 0.70)0.021*
Compliance with programme§
 No11
 Yes3.65 (3.29 to 4.04)3.58 (3.30 to 3.89)0.430
Living with a smoker
 No11
 Yes0.94 (0.86 to 1.02)0.92 (0.86 to 0.99)0.590
Smoking cessation clinic
Setting
 Citizen aimed11
 Hospital (including midwives)1.02 (0.85 to 1.21)1.09 (0.94 to 1.27)0.982
 Other1.13 (0.89 to 1.45)1.05 (0.84 to 1.31)0.191
Smoking cessation intervention
Programme format
 Individual11
 Group0.96 (0.84 to 1.10)0.97 (0.87 to 1.08)0.696
Medication offered for free
 No free medication11
 Free for days (<1 week)0.87 (0.78 to 0.97)0.87 (0.80 to 0.96)0.199
 Free for ≥1 week0.97 (0.82 to 1.14)0.95 (0.83 to 1.10)0.163
 Hierarchical clusterVariance (95% CI)Variance (95% CI)
Smoking cessation clinic
 Variance of random intercepts0.06 (0.04 to 0.11)0.07 (0.04 to 0.11)
  • In addition, the model was also adjusted for the time of data collection and for geographic regions. Statistically significant results are marked with an *.

  • †Disadvantaged smokers: unemployed and receiving unemployment benefits and/or low education (no education except primary schooling and/or only short work-related courses).13

  • ‡Heavy smokers: smoking ≥20 pack-years and/or daily consumption of ≥20 cigarettes and/or Fagerström nicotine dependency score of ≥7 points.12 ,19

  • §Compliance with the programme was defined as having attended at least 75% of the scheduled meetings17 or for Come & Quit at least four sessions.8