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Table 1 Characteristics of subjects with irritable bowel syndrome with constipation and their beliefs regarding bowel habits

From: Impact of symptoms by gender and age in Japanese subjects with irritable bowel syndrome with constipation (IBS-C): a large population-based internet survey

  Female (n = 541) Male (n = 218) p-value Age 20–49 years (n = 404) Age 50–79 years (n = 355) p-value
Female/male (n) 541/0 0/218 N/A 298/106 (73.8/26.2) 243/112 (68.5/31.5) n.s.
Age (mean ± SD, years) 47 ± 14 49 ± 15 < 0.05 36 ± 8 60 ± 7 N/A
Frequency of bowel movements (median, times/week) 3 5 < 0.001 3 4 < 0.05
Ideal frequency of bowel movements    < 0.05    n.s.
 6 times/week or less 123 (22.7) 42 (19.3)   91 (22.5) 74 (20.8)  
 7 times/week 402 (74.3) 161 (73.9)   299 (74.0) 264 (74.4)  
 8 times/week or more 16 (3.0) 15 (6.9)   14 (3.5) 17 (4.8)  
Consider bowel habits to be an indicator of health    n.s.    n.s.
 None 50 (9.2) 21 (9.6)   29 (7.2) 42 (11.8)  
 Sometimes 160 (29.6) 61 (28.0)   114 (28.2) 107 (30.1)  
 Often 124 (22.9) 62 (28.4)   100 (24.8) 86 (24.2)  
 Mostly 104 (19.2) 44 (20.2)   80 (19.8) 68 (19.2)  
 Always 103 (19.0) 30 (13.8)   81 (20.0) 52 (14.6)  
Degree of anxiety in daily life    n.s.    < 0.001
 None 126 (23.3) 50 (22.9)   70 (17.3) 106 (29.9)  
 Sometimes 309 (57.1) 131 (60.1)   225 (55.7) 215 (60.6)  
 Often 80 (14.8) 31 (14.2)   84 (20.8) 27 (7.6)  
 Almost 26 (4.8) 6 (2.8)   25 (6.2) 7 (2.0)  
  1. Data are expressed as n (%) unless otherwise indicated