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Table 1 Demographic and clinical characteristics of participants with overactive bladder using no treatment drugs before each observation period

From: Impact of a direct-to-consumer information campaign on prescription patterns for overactive bladder

Characteristics Pre-Campaign Yeara Year 1a Year 2a p-valueb
Sample size, n 1332 1277 1157  
Sex, female, n (%) 768 (58) 731 (57) 666 (58) .98
Age, mean (SD) 53 (13.1) 54 (13.2) 55 (13.5) .008
Comorbidity, n (%)c
 0 416 (31) 337 (26) 271 (23) <.001
 1 370 (28) 364 (29) 326 (28)  
  ≥ 2 546 (41) 576 (45) 560 (48)  
  1. aPre-Campaign Year (November 19, 2010 to November 18, 2011); Year 1 (November 19, 2011 to November 18, 2012); Year 2 (November 19, 2012 to November 18, 2013). SD, standard deviation
  2. bp-value: Analysis of variance or chi-square test
  3. cComorbidity: Charlson Comorbidity Index score