Table 5.
Predictors of 30-day quit rate at 6 months follow-up among study participants (Multivariable logistic regression model) (N = 759).
| Variable | Adjusted OR (95% CI) | Value of p |
|---|---|---|
| Age (years) | ||
| 18–24 | 1.107 (0.453–2.706) | 0.824 |
| 25–44 | Reference | |
| 45–64 | 0.883 (0.519–1.503) | 0.647 |
| 65 or more | 1.336 (0.192–9.310) | 0.770 |
| Nationality | ||
| Arab | Reference | |
| Non-Arab | 1.410 (0.751–2.614) | 0.258 |
| Age of smoking initiation | ||
| At or below the age of 18 years | Reference | |
| After the age of 18 years | 1.620 (1.002–2.630) | 0.049* |
| Number of cigarettes smoked/day at baseline | ||
| 1–10 | 2.741 (1.209–6.218) | 0.016* |
| 11–20 | 2.122 (1.035–4.354) | 0.040* |
| 21–30 | 2.228 (0.972–5.105) | 0.058 |
| ≥31 | Reference | |
| Carbon monoxide concentration at baseline (ppm) | ||
| 0–9 | 3.365 (1.510–7.497) | 0.003* |
| 10–19 | 1.161 (0.499–2.701) | 0.728 |
| 20–29 | 1.355 (0.543–3.381) | 0.515 |
| 30 or more | Reference | |
| Used varenicline for smoking cessation | ||
| Yes | 2.244 (1.430–3.519) | <0.001* |
| No | Reference | |
| Used NRT for smoking cessation | ||
| Yes | 2.094 (1.224–3.582) | 0.007* |
| No | Reference | |
| Used a combination of NRT and varenicline | ||
| Yes | 2.022 (1.007–4.057) | 0.048* |
| No | Reference | |
| Number of quit attemptsa | ||
| One attempt | 1.750 (1.204–2.544) | 0.003* |
| Multiple attempts | Reference | |
| Expose to secondhand smoke among friendsa | ||
| Yes | Reference | |
| No | 1.912 (1.269–2.880) | 0.002* |
*Statistically significant, OR, odds ratio; Cl, confidence level; ppm, particle per million; asince the first visit to the smoking cessation clinic.