Table 2
Results of OTC NRT versus OTC placebo
Study
Abstinent with NRT
Abstinent with placebo
OR (95% CI)
Davidson
et al
28
33/401
16/401
2.2 (1.2 to 4.0)
Hays
et al
31
18/321
9/322
2.1 (0.9 to 4.7)
Shiffman
et al
27
43/283
15/284
3.2 (1.7 to 5.9)
Sonduskov
et al
30
15/136
6/142
2.8 (1.1 to 7.5)