Nursing intervention v usual care for smoking cessation at longest follow up (≥6 mo)*
Outcome
Nursing advice
Usual care
RBI (95% CI)
NNT (CI)
*Based on a random effects model. Abbreviations defined in glossary; RBI, NNT, and CI calculated from data in article.
Smoking cessation
15.7%
12.5%
28% (2 to 61)
32 (17 to 250)