Table 1 Characteristics of cohort
From: Risk of inflammatory bowel disease following a diagnosis of irritable bowel syndrome
Variables | Well-defined IBS cohort | Other IBS cohort | Non-IBS cohort |
|---|---|---|---|
N | 2,205 | 7,136 | 18,678 |
Mean (SD) age[1] | 31.2 (7.8) | 30.1 (8.0) | 28.5 (7.9) |
N (%) male | 1281 (58.1) | 3996 (56.0) | 15014 (80.4)[2] |
Race [N (%)] | Â | Â | Â |
Black | 394 (17.9) | 1238 (17.4) | 3397 (18.2) |
White | 1492 (67.7) | 4792 (67.2) | 11894 (63.7) |
Other | 319 (14.5) | 1106 (15.5) | 3387 (18.1) |
Education level [N (%)][1] | Â | Â | Â |
High school | 1348 (61.1) | 4514 (63.3) | 12721 (68.1) |
At least some college | 568 (25.8) | 1771 (24.8) | 3772 (20.2) |
Masters or doctorate | 186 (8.4) | 505 (7.1) | 1182(6.3) |
Unknown | 103 (4.7) | 346 (4.9) | 1003 (5.4) |
Service [N (%)][1] | Â | Â | Â |
Army | 736 (33.4) | 2328 (32.6) | 6137 (32.9) |
Air Force | 783 (35.5) | 2476 (34.7) | 6080 (32.6) |
Navy | 510 (23.1) | 1649 (23.1) | 4300 (23.0) |
Marines | 124 (5.6) | 467 (6.5) | 1573 (8.4) |
Coast Guard | 52 (2.4) | 216 (3.0) | 588 (3.2) |
Rank [N (%)][1] | Â | Â | Â |
Enlisted | 1813 (82.2) | 5935 (83.2) | 15704 (84.1) |
Officer/Warrant officer | 392 (17.8) | 1201 (16.8) | 2974 (15.9) |
Marital status [N (%)][1] | Â | Â | Â |
Married | 1358 (61.6) | 4153 (58.2) | 9740 (52.2) |
Single | 668 (30.3) | 2514 (35.2) | 8228 (44.1) |
Other | 174 (7.9) | 461 (6.5) | 680 (3.6) |
Unknown | 4 (0.2) | 8 (0.1) | 30 (0.2) |
N (%) deployed during surveillance period | 554 (25.1) | 1878 (26.3) | 2432 (26.0) |
Primary outcomes | Â | Â | Â |
N (%) with IBD | 22 (1.0) | 53 (0.7) | 19 (0.1) |
N (%) with UC | 11 (0.5) | 22 (0.3) | 11 (0.06) |
N (%) with CD | 9 (0.4) | 24 (0.3) | 5 (0.03) |
N (%) with IC | 2 (0.09) | 6 (0.08) | 3 (0.02) |
Mean (SD) years of follow-up | 3.6 (2.7) | 3.3 (2.7) | 3.7 (2.8) |