Table 2.
Comparison of the demographics, IBS symptoms and subtypes of the FD-IBS clinical overlap group with those of the IBS alone group
| FD-IBS overlap | IBS alone | P | |
| (n = 151) | (n = 329) | ||
| Demographics | |||
| Age (years; ± s.d.) | 42.91 ± 14.61 | 43.63 ± 16.21 | 0.63 |
| Female Gender (%) | 79(52.3) | 194(59.0) | 0.17 |
| Severity score of abdominal pain or discomfort | 2.95 ± 0.76 | 2.87 ± 0.81 | 0.34 |
| Symptoms (%) | |||
| (score, ± s.d.) | |||
| <3 bowel movements/week | 39(25.8) | 79(24.0) | 0.67 |
| (1.52 ± 1.05) | (1.46 ± 0.96) | 0.53 | |
| >3 bowel movements/day | 31(20.5) | 71(21.6) | 0.79 |
| (1.33 ± 0.79) | (1.48 ± 1.06) | 0.08 | |
| Hard or lumpy stools | 57(37.7) | 109(33.1) | 0.32 |
| (1.92 ± 1.37) | (1.75 ± 1.23) | 0.19 | |
| Loose or watery stools | 55(36.4) | 134(40.7) | 0.37 |
| (1.73 ± 1.21) | (1.92 ± 1.34) | 0.12 | |
| Defecation straining | 63(41.7) | 121(36.8) | 0.30 |
| (2.04 ± 1.47) | (1.91 ± 1.39) | 0.36 | |
| Urgency | 56(37.1) | 136(41.3) | 0.38 |
| (1.87 ± 1.34) | (1.98 ± 1.39) | 0.39 | |
| A feeling of incomplete bowel movement | 80(53.0) | 156(47.4) | 0.26 |
| (2.26 ± 1.46) | (2.06 ± 1.37) | 0.14 | |
| Passing mucus | 40(26.5) | 84(25.5) | 0.82 |
| (1.40 ± 0.83) | (1.46 ± 0.96) | 0.52 | |
| Abdominal fullness, bloating or swelling | 103(68.2) | 212(64.4) | 0.42 |
| (2.66 ± 1.49) | (2.54 ± 1.48) | 0.42 | |
| Overall score of abnormal bowel habit | 16.74 ± 6.05 | 16.58 ± 5.05 | 0.78 |
| Subtypes (%) | |||
| IBS-C | 43(28.5) | 91(27.7) | 0.85 |
| IBS-D | 41(27.2) | 116(35.3) | 0.08 |
| IBS-M | 14(9.3) | 18(5.5) | 0.12 |
| IBS-U | 53(35.1) | 104(31.6) | 0.45 |
FD, functional dyspepsia; IBS, irritable bowel syndrome; IBS-C, IBS with constipation; IBS-D, IBS with diarrhea; IBS-M, mixed IBS; IBS-U, unsubtyped IBS