TABLE 1.
Low-dependence Stratum (2 mg) | High-dependence Stratum (4 mg) | |||||
NRT | Placebo | Total | NRT | Placebo | Total | |
N | 241 | 242 | 483 | 120 | 119 | 239 |
Failed, n (%) | 182 (75.52) | 190 (78.51) | 372 (77.02) | 83 (69.17) | 95 (79.83) | 178 (74.48) |
Succeeded, n (%) | 59 (24.48) | 52 (21.49) | 111 (22.98) | 37 (30.83) | 24 (20.17) | 61 (25.52) |
P value* | 0.3851 | 0.0565 | ||||
OR* | 1.22 | 1.82 | ||||
95% CI | 0.78–1.92 | 0.99–3.32 |
*P value based on Cochran-Mantel-Haenszel test (adjusted by center); OR based on logistic model (adjusted by center).
CI, confidence interval; NRT, nicotine replacement therapy; OR, odds ratio.