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To determine whether baseline urgency urinary incontinence (UUI) episodes predict the need for increased doses of fesoterodine in patients with overactive bladder (OAB), as clinicians would benefit from data that help to predict which patients require higher doses of antimuscarinics to manage UUI episodes.In this pooled analysis of data from two double-blind, placebo-controlled trials, patients were randomized to placebo or fesoterodine 4 or 8 mg for 12 weeks and stratified into tertiles (>0–<2, 2–<4, or ≥4) according to the number of UUI episodes/24 h as recorded in 3-day bladder diaries at baseline. The change in mean UUI episodes/24 h from baseline to end of study was assessed using analysis of covariance.In a post hoc analysis of data from two clinical trials, there were significant reductions from baseline in UUI episodes for fesoterodine 4 and 8 mg vs placebo in patients (n) with >0–<2 (422), 2–<4 (424) and ≥4 (481) UUI episodes at baseline (all P < 0.01). In patients with 2–<4 and ≥4 UUI episodes at baseline, fesoterodine 8 mg gave significantly greater mean reductions (−1.92 and −4.17, respectively) vs fesoterodine 4 mg (−1.43 and −3.31) (P < 0.05). The most common adverse events were dry mouth (placebo, 8%; fesoterodine 4 mg, 19%; and 8 mg, 35%) and constipation (placebo, 2%; fesoterodine 4 mg, 5%; and 8 mg, 6%).Fesoterodine 4 and 8 mg significantly reduced UUI episodes vs placebo; this effect appeared to be greater with fesoterodine 8 mg in patients with ≥2 UUI episodes/24 h at baseline. Fesoterodine was well tolerated, although higher doses increased the incidence of adverse events. These findings might aid the clinical identification of patients with OAB who would most benefit from increasing the dose of fesoterodine from 4 to 8 mg.