Table 4. Comparing adjusted ORs for the effect of e-cigarette use on quitting in the main and sensitivity analyses.
| Wave 1 to 2 quitting | Wave 2 to 3 quitting | Wave 1 to 3 quitting | ||||
|---|---|---|---|---|---|---|
| N(n) | OR (95% CI) | N(n) | OR (95% CI) | N(n) | OR (95% CI) | |
| Main model | 581 (78) | 1.23 (0.94-1.61) | 616 (160) | 1.51 (1.24-1.85) | 829 (118) | 1.39 (1.11-1.74) |
| Sensitivity analysis 1
(Omitting ever users of other nicotine products) |
148 (16) | 2.04 (1.15-3.62) | 122 (20) | 1.69 (0.96-2.99) | 217 (25) | 2.22 (1.38-3.57) |
| Sensitivity analysis 2
(Linking quitting to current rather than ever e-cigarette use at baseline) |
581 (64) | 1.41 (1.06-1.89) | 615 (89) | 1.30 (1.01-1.67) | 829 (95) | 1.56 (1.21-2.00) |
| Sensitivity analysis 3
(Adjusting for variables taking account of data recorded at both baseline and end of follow-up) |
655 (82) | 1.20 (0.92-1.57) | 591 (160) | 1.66 (1.35-2.04) | 901 (121) | 1.43 (1.14-1.79) |
| Sensitivity analysis 4
(Adjust also for quitting by Wave 2) |
Not applicable | Not applicable | 443 (64) | 1.43 (1.11-1.84) | ||
N = total number quitting
n = number of quitters among e-cigarette users (current users in sensitivity analysis 2, ever users otherwise)