Skip to main content

Table 1 Demographic and health characteristics of respondents with IBS-D (diagnosed and undiagnosed) and controls

From: Health-related quality of life, work productivity, and indirect costs among patients with irritable bowel syndrome with diarrhea

  Total n = 66,491 IBS-D, diagnosed n = 842 IBS-D, undiagnosed n = 260 Controls n = 65,389 p-value
Age, mean (SD) 48.72 (16.61) 50.39 (15.79)a 43.05 (14.40)b 48.72 (16.62)c <0.001
Charlson Comorbidity Index, mean (SD) 0.42 (0.99) 0.72 (1.23)a 0.75 (1.50)a 0.41 (0.98)b <0.001
Female, n (%) 33377 (50.2) 510 (60.6)a 169 (65.0)a 32698 (50.0)b  
Race/ethnicity, n (%)      <0.001
 Non-Hispanic White 47700 (71.7) 712 (84.6)a 180 (69.2)b 46808 (71.6)b  
 Non-Hispanic Black 7857 (11.8) 31 (3.7)a 28 (10.8)b 7798 (11.9)b  
 Hispanic 5603 (8.4) 49 (5.8)a 27 (10.4)b 5527 (8.5)b  
 Other ethnicity 5331 (8.0) 50 (5.9)a 25 (9.6)b 5256 (8.0)b  
Education, n (%)      0.069
  < 4-year degree 39657 (59.6) 496 (58.9)a 173 (66.5)b 38988 (59.6)a  
  ≥ 4-year degree 26834 (40.4) 346 (41.1)a 87 (33.5)b 26401 (40.4)a  
Annual household income, n (%)      0.008
  < $25 k 12750 (19.2) 161 (19.1)a 65 (25.0)b 12524 (19.2)a  
 $25–50 k 17775 (26.7) 215 (25.5)a 80 (30.8)a 17480 (26.7)a  
 $50–75 k 13037 (19.6) 189 (22.4)a 54 (20.8)a,b 12794 (19.6)b  
  ≥ $75 k 17369 (26.1) 214 (25.4)a 46 (17.7)b 17109 (26.2)a  
 Declined to answer 5560 (8.4) 63 (7.5)a 15 (5.8)a 5482 (8.4)a  
Labor force participation, n (%)      0.424
 Yes 35636 (53.6) 433 (51.4)a 142 (54.6)a 35061 (53.6)a  
 No 30855 (46.4) 409 (48.6)a 118 (45.4)a 30328 (46.4)a  
Body mass index, n (%)      <0.001
 Underweight (<18.5) 1231 (1.9) 11 (1.3)a 3 (1.2)a 1217 (1.9)a  
 Normal weight (18.5–24.99) 20894 (31.4) 228 (27.1)a 76 (29.2)a,b 20590 (31.5)b  
 Overweight (25–29.99) 21347 (32.1) 243 (28.9)a 68 (26.2)a 21036 (32.2)b  
 Obese (≥30) 21265 (32.0) 341 (40.5)a 111 (42.7)a 20813 (31.8)b  
 Unknown 1754 (2.6) 19 (2.3)a 2 (0.8)a 1733 (2.7)a  
  1. For pairwise comparisons, values in the same row not sharing the same subscript letter (a, b, or c) are significantly different at p < 0.05
  2. Abbreviations: IBS-D irritable bowel syndrome with diarrhea, SD standard deviation