title: Voiding diary might serve as a useful tool to understand differences between bladder pain syndrome/interstitial cystitis and overactive bladder.
abstract: OBJECTIVE
  To identify the voiding characteristics of bladder pain syndrome/interstitial cystitis and overactive bladder.
  
  
  METHODS
  Between September 2005 and June 2010, 3-day voiding diaries of 49 consecutive bladder pain syndrome/interstitial cystitis patients and 301 overactive bladder patients were prospectively collected at an outpatient clinic and retrospectively analyzed.
  
  
  RESULTS
  The characteristics of the two groups were not significantly different. However, all voiding variables including volume and frequency were significantly different except for the total voided volume: patients with bladder pain syndrome/interstitial cystitis showed significantly higher voiding frequencies, smaller maximal and mean voided volume, and more constant and narrower ranges of voided volume compared with overactive bladder patients (P < 0.005). Furthermore, mean intervals between voiding in bladder pain syndrome/interstitial cystitis were shorter and more consistent during the day and night (P < 0.001), although mean night-time variances were greater than daytime variances. Logistic regression analysis showed that total night-time frequency, maximal night-time voided volume and mean variance of daytime voiding intervals most significantly differentiated the two groups.
  
  
  CONCLUSIONS
  Some voiding characteristics of bladder pain syndrome/interstitial cystitis and overactive bladder patients differ significantly according to 3-day voiding diary records. These findings provide additional information regarding the differences between these two diseases in the outpatient clinical setting.
authors.affiliation: Department of Urology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Sung Han
authors.initials: SH
authors.lastname: Kim
authors.forename: Shin Ah
authors.initials: SA
authors.lastname: Oh
authors.forename: Seung-June
authors.initials: SJ
authors.lastname: Oh
mesh_terms: D000368:Aged; D000465:Algorithms; D018856:Cystitis, Interstitial / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008499:Medical Records; D008875:Middle Aged; D010045:Outpatients; D010146:Pain / Q000175:diagnosis*; D011446:Prospective Studies; D012189:Retrospective Studies; D053201:Urinary Bladder, Overactive / Q000175:diagnosis*; D014554:Urination
keywords: cystitis; interstitial; intractable; overactive; pain; urinary bladder