Table 1. Population demographics and symptom history.
|
Individuals,
N
(%) |
||
|---|---|---|
| Parameter | Diagnosed with IBS-D (n=1,094) | Undiagnosed (n=830) |
| Male/female (%) | 241:853a (22:78a) | 299b:531 (36b:64) |
| Age range, years (n, %) | ||
| 18–39 | 416 (38) | 332 (40) |
| 40–59 | 437 (40) | 398 (48)a |
| ≥60 | 241 (22)a | 100 (12) |
| Race/ethnicity (n, %) | ||
| White | 1,017 (93)a | 714 (86) |
| Black | 33 (3) | 50 (6)b |
| Hispanic/Latino | 33 (3) | 42 (5) |
| Asian-American/Asian | 22 (2) | 33 (4)b |
| Other ethnicity | 11 (1) | 25 (3) |
| Symptom duration, years (n, %) | ||
| <5 | 272 (25) | 546 (66)a |
| 5–10 | 218 (20)b | 134 (16) |
| ≥10 | 604 (55)a | 150 (18) |
| Symptom intensity (n, %) | ||
| Mild (score, 1–2) | 33 (3) | 50 (6)a |
| Moderate (score, 3–5) | 886 (81) | 714 (86) |
| Severe (score, 6–7) | 175 (16)a | 66 (8) |
| Consulted ≥3 physicians (n, %) | ||
| Symptoms <5 years | 60 (22)a,c | 33 (6)d |
| Symptoms 5–10 years | 83 (38)a,e | 23 (17)f |
| Symptoms ≥10 years | 302 (50)a,g | 44 (29)h |
| Consultation with gastroenterologist (n, %) | ||
| Symptoms <5 years | 139 (51)a,c | 137 (25)d |
| Symptoms 5–10 years | 122 (56)a,e | 40 (30)f |
| Symptoms ≥10 years | 405 (67)a,g | 68 (45)h |
IBS-D, diarrhea-predominant irritable bowel syndrome.
a
P<0.05 vs. undiagnosed.
b
P<0.05 vs. diagnosed.
c
n=272.
d
n=546.
e
n=218.
f
n=134.
g
n=604.
h
n=150.