Association between improvement in smoking during lockdown (quitting smoking or reducing the number of cigarettes smoked per day) and selected individual variables (base model), conditions during lockdown and psychological variables: distribution at baseline (N), proportion of people improving their smoking habit (%) and corresponding ORs* with 95% CIs
| Variable | Current smokers N | People who quit smoking during lockdown | People who reduced smoking during lockdown | ||
| % | OR (95% CI) | % | OR (95% CI) | ||
| Total | 1400 | 8.6 | 15.0 | ||
| Gender | |||||
| Male | 724 | 9.0 | 1 | 16.5 | 1 |
| Female | 677 | 8.2 | 0.95 (0.60 to 1.52) | 13.3 | 0.83 (0.57 to 1.22) |
| Age | |||||
| 55–74 | 482 | 6.1 | 1 | 13.5 | 1 |
| 35–54 | 588 | 7.5 | 1.01 (0.57 to 1.78) | 11.4 | 0.85 (0.54 to 1.33) |
| 18–34 | 331 | 14.3 | 1.92 (1.07 to 3.45) | 23.4 | 2.14 (1.33 to 3.46) |
| Education | |||||
| Low | 260 | 7.5 | 1 | 16.7 | 1 |
| Intermediate | 691 | 7.1 | 0.96 (0.47 to 1.97) | 15.1 | 0.94 (0.54 to 1.61) |
| High | 450 | 11.5 | 1.52 (0.74 to 3.12) | 13.7 | 0.85 (0.47 to 1.52) |
| Living with children aged 0–14 | |||||
| No | 937 | 8.2 | 1 | 15 | 1 |
| Yes | 464 | 9.3 | 1.05 (0.63 to 1.74) | 15 | 1.07 (0.7 to 1.64) |
| Geographic area | |||||
| North | 647 | 8.2 | 1 | 16.9 | 1 |
| Centre | 287 | 6.6 | 0.81 (0.44 to 1.51) | 13.2 | 0.77 (0.47 to 1.28) |
| South and Islands | 467 | 10.4 | 1.24 (0.74 to 2.08) | 13.4 | 0.80 (0.52 to 1.25) |
| Number of cigarettes smoked per day | |||||
| >15 | 282 | 4.8 | 1 | 11.4 | 2.07 (1.17 to 3.64) |
| 6–15 | 723 | 5.1 | 0.99 (0.49 to 1.97) | 15.5 | 1.59 (0.96 to 2.63) |
| ≤5 | 395 | 17.7 | 3.55 (1.82 to 6.93) | 18.7 | 1 |
| Working condition during lockdown | |||||
| Regularly working | 209 | 7.1 | 1 | 11.6 | 1 |
| Working from home | 392 | 9.3 | 1.10 (0.44 to 2.71) | 11.5 | 1.06 (0.58 to 1.92) |
| Unemployed before lockdown | 473 | 7.5 | 1.18 (0.48 to 2.88) | 17.5 | 1.93 (1.02 to 3.64) |
| Job lost | 327 | 10.3 | 1.59 (0.65 to 3.91) | 17.5 | 1.51 (0.82 to 2.81) |
| People per room | |||||
| ≤1 | 1109 | 8.9 | 1 | 13.6 | 1 |
| >1 | 291 | 7.5 | 0.76 (0.41 to 1.42) | 20.3 | 1.71 (1.02 to 2.84) |
| Decreased quality of life | |||||
| No | 469 | 9.3 | 1 | 13.7 | 1 |
| Yes | 932 | 8.3 | 0.87 (0.53 to 1.43) | 15.6 | 1.15 (0.75 to 1.77) |
| Decreased amount of sleep | |||||
| No | 925 | 8.4 | 1 | 15.3 | 1 |
| Yes | 475 | 9.1 | 1.11 (0.68 to 1.79) | 14.4 | 0.94 (0.64 to 1.39) |
| Increased anxiety | |||||
| No | 748 | 9.9 | 1 | 14.9 | 1 |
| Yes | 653 | 7.2 | 0.67 (0.42 to 1.08) | 15 | 0.99 (0.68 to 1.44) |
| Increased depression | |||||
| No | 688 | 9.1 | 1 | 15.3 | 1 |
| Yes | 712 | 8.1 | 0.85 (0.54 to 1.35) | 14.6 | 0.96 (0.65 to 1.41) |
*ORs and corresponding 95% CIs were estimated through unconditional multiple logistic regression models after adjustment for gender, age, education, living with children aged 0–14, geographic area and number of cigarettes smoked per day. Estimates in bold are statistically significant at 0.05 level.