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Table 1 Socio-demographics and disease characteristics of patients

From: Impact of overactive bladder on quality of life and resource use: results from Korean Burden of Incontinence Study (KOBIS)

  All patients Incontinence episode per day
0 1 2–3 ≥4 p-value*
N 625 162 165 177 121
  Age (SD) 63.5 (12.0) 62.3 (12.2) 63.2 (13.3) 63.9 (11.6) 65.0 (10.3) 0.037
  Female, % 422 (67.6) 93 (57.8) 100 (60.6) 131 (74.0) 98 (81.0) <0.001
• % Post-menopausal 86.7 82.8 87.0 89.3 86.7 0.983
  % retired 26.9 29.0 33.3 22.0 22.3 0.195
  Education level, %       
• Elementary/middle school 36.2 27.8 30.9 39.0 50.4 0.009
• High school graduate 36.4 36.4 38.2 39.0 30.6 0.690
• University graduate 27.4 35.8 30.9 22.0 19.0 0.020
  Household income, %       
• 0 – 50,000,000 KRW 74.8 69.3 77.8 78.4 79.1 0.341
• 50,000,001 – 100,000,000 KRW 16.3 19.7 14.8 11.9 20.5 0.793
• > 100,000,000 KRW 8.9 10.9 7.4 9.7 6.4 0.559
  Health insurance coverage (%)       
• National Health Insurance 71.5 71.6 69.7 70.1 76.0 0.909
• National Health Insurance and Private Insurance 26.3 27.2 27.9 27.6 20.7 0.515
• Public Assistance 2.2 1.2 2.4 2.3 3.3 0.110
OAB characteristics       
Urinary incontinence, episodes/day (SD) 2.02 (2.31) 0 (0) 1 (0) 2.43 (0.50) 5.54 (2.80) <0.001
Daytime urgency, episodes/day (SD) 3.95 (3.71) 2.78 (2.65) 3.19 (2.60) 3.90 (2.77) 6.64 (5.64) <0.001
Daytime micturition, episodes/day (SD) 8.94 (4.29) 8.70 (6.27) 8.75 (3.24) 8.84 (3.16) 9.67 (3.63) 0.134
% with urinary frequencya 43.4 36.4 41.2 44.6 53.7 0.002
Nocturia, episodes/day (SD) 2.39 (2.23) 1.95 (1.38) 2.44 (3.00) 2.33 (1.70) 3.00 (2.50) 0.006
Use of anti-cholinergicb medication, n (%)       
• Currently 41.6 50.0 45.5 39.0 28.9 <0.001
• In the past 8.3 4.3 6.1 9.0 15.7 0.001
• Never 50.1 45.7 48.5 52.0 55.4 0.019
  1. *Comparison across severity groups conducted using linear or logistic regression for continuous and dichotomous outcomes, respectively. Where appropriate, analysis adjusted for age and gender
  2. aUrinary frequency defined as ≥9 micturition episodes per day
  3. bAnti-cholinergic medications include Tolterodine, Propiverine, Oxybuytnin, Trospium, Fesoterodine, Solifenacin, Flavoxate, and Imipramine