Minimum of 7-day point prevalence abstinence (PPA) in the per-protocol (PP) and as-treated (AT) populations (multivariate analysis)
| Minimum 7-day PPA at 6 months | Multivariate regression* | ||||||
| n | Quitters | % | ORs | 95% CI | P value | ||
| Lower | Upper | ||||||
| PP population | |||||||
| Only considering respondents (n=743/759†)‡ | 0.214 | ||||||
| Control | 453 | 138 | 30.5 | 1 | |||
| e-TIS exposure | 290 | 102 | 35.2 | 1.22 | 0.89 | 1.67 | |
| Considering non-respondents as smokers (n=1831/1914†)§ | 0.6689 | ||||||
| Non-exposure to e-TIS | 1080 | 132 | 12.2 | 1 | |||
| e-TIS exposure | 751 | 99 | 13.2 | 1.06 | 0.8 | 1.41 | |
| AT population | |||||||
| Only considering respondents (n=1095/11202†)‡ | 0.1882 | ||||||
| Non-exposure to e-TIS | 671 | 210 | 31.3 | 1 | |||
| e-TIS exposure | 424 | 150 | 35.4 | 1.19 | 0.92 | 1.54 | |
| Considering non-respondents as smokers (n=2679/28062)§ | 0.1449 | ||||||
| Non-exposure to e-TIS | 1660 | 202 | 12.2 | 1 | |||
| e-TIS exposure | 1019 | 146 | 14.3 | 1.19 | 0.94 | 1.49 | |
*Adjusted for baseline characteristics, with the exception of tobacco status at inclusion. The stepwise variable selection method was used with an input threshold in the model at 0.2 and an output threshold in the model at 0.05. Only factors with a significant association with the 0.2 threshold in the bivariate model were candidates in the multivariate model.
†Due to missing data regarding the variables considered in the multivariate model.
‡Retained variables: expecting a child.
§Retained variables: family situation, level of education, treatment for cardiovascular or respiratory diseases.
e-TIS, e-intervention Tabac Info Service.