Table 1.
Participant characteristics.
| Healthy control | IBD | IBS | Group differences | |||||
|---|---|---|---|---|---|---|---|---|
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| Mean | SD | Mean | SD | Mean | SD | F | P-value | |
| Demographics | ||||||||
| n (female/male) | 9/0 | 8/1 | 9/0 | |||||
| Age | 27.44 | 5.32 | 31.56 | 8.44 | 31.78 | 12.25 | 0.64 | 0.534 |
| Gastrointestinal symptom characteristics | ||||||||
| 24-hour symptom severity | – | – | 3.78 | 3.42 | 9.56 | 5.43 | 7.29 | 0.016 |
| Duration of symptoms (years) | – | – | 10.56 | 8.95 | 18.67 | 13.88 | 2.17 | 0.160 |
| Symptoms of anxiety and depression | ||||||||
| Anxiety (HAD) | 4.56 | 5.18 | 5.89 | 2.80 | 4.00 | 2.18 | 0.65 | 0.533 |
| Depression (HAD) | 2.89 | 4.17 | 1.78 | 1.86 | 2.45 | 0.87 | 0.91 | 0.417 |
| State anxiety (STAI) | 43.44 | 5.86 | 51.33 | 13.66 | 51.67 | 8.65 | 1.98 | 0.160 |
| Temperature for pain threshold (°C) | 46.69 | 2.86 | 45.33 | 1.49 | 46.35 | 2.28 | 0.87 | 0.432 |
IBD, inflammatory bowel disease; IBS, irritable bowel syndrome; HAD, Hospital Anxiety and Depression scale; STAI, State-Trait Anxiety Inventory.