| Variable | IBS symptoms | No IBS symptoms | Total |
| Anxiety |
|
|
|
| Yes | 283 | 258 | 541 |
| No | 129 | 236 | 365 |
| Total | 412 | 494 | 906 |
| Anxiety frequency |
|
|
|
| Once daily | 164 | 159 | 343 |
| 2 - 3 times daily | 88 | 86 | 174 |
| No | 48 | 29 | 77 |
| Total | 320 | 274 | 594 |
| Depression |
|
|
|
| Yes | 177 | 160 | 337 |
| No | 223 | 329 | 552 |
| Total | 400 | 489 | 889 |