title: Comparison of 20-minute pad test versus 1-hour pad test in women with stress urinary incontinence.
abstract: OBJECTIVE
  To compare the sensitivity of the 20-minute pad test with that of the 1-hour pad test in women with stress urinary incontinence.
  
  
  METHODS
  From January to March 2005, 100 women with stress urinary incontinence who underwent a urodynamic study were enrolled. Each patient underwent a 1-hour pad test before the urodynamic study. The infusion of 250 mL water into the bladder in the 20-minute pad test was performed after the urodynamic study. The results of the two tests in each patient were analyzed and compared using Pearson's chi-square or the Wilcoxon signed-rank test.
  
  
  RESULTS
  The mean age of the 100 women was 53.3 +/- 12.1 years, with a mean parity of 2.9 +/- 1.5. In the 100 patients, the 20-minute pad test had better sensitivity than the 1-hour pad test (46% versus 34%, P <0.001). In the quantitative study, the two pad tests had fair agreement, and the pad weight results for the 1-hour pad test had significantly larger amounts than those for the 20-minute pad test (P = 0.002).
  
  
  CONCLUSIONS
  The 20-minute pad test had better sensitivity than the 1-hour pad test in women with stress urinary incontinence.
authors.affiliation: Department of Obstetrics and Gynecology, National Taiwan University College of Medicine and National Taiwan University Hospital, Taipei, Taiwan.
authors.forename: Wen-Yih
authors.initials: WY
authors.lastname: Wu
authors.forename: Bor-Ching
authors.initials: BC
authors.lastname: Sheu
authors.forename: Ho-Hsiung
authors.initials: HH
authors.lastname: Lin
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008875:Middle Aged; D012680:Sensitivity and Specificity; D013997:Time Factors; D014550:Urinary Incontinence, Stress / Q000175:diagnosis* / Q000503:physiopathology; D014556:Urine; D014563:Urodynamics