Frequencies and percentages for smoking related outcome variables at baseline and each follow up time point for the e-cigarette (EC) and usual care (UC) arms.
BACKGROUND: Tobacco use is a major risk factor for recurrent stroke. Very few studies have been performed to support smoking cessation among patients who have experienced a stroke or TIA. The purpos
OBJECTIVE: To consider the problem of the calculation of number needed to treat (NNT) derived from risk difference, odds ratio, and raw pooled events shown to give different results using data from a