| 95%CI | OR | Chi-square | P | NOIBS | IBS | Irritable bowel syndrome variable | |||
| % | No. | % | No. | ||||||
| Family history of IBS | |||||||||
| (1.61, 5.86) | 3.08 | 12.14 | 0.0001 | 13.9 | 24 | 22.5 | 39 | Yes | |
| 41.6 | 72 | 22 | 38 | No | |||||
| Chronic health problem: | |||||||||
| (0.71, 4.6) | 1.81 | 1.63 | 0.202 | 5.2 | 9 | 7 | 12 | Yes | |
| 50.6 | 87 | 37.2 | 64 | No | |||||
| Medication use | |||||||||
| (1.2,7.2) | 2.9 | 5.58 | 0.015 | 4.7 | 8 | 9.4 | 16 | Yes | |
| 50.9 | 87 | 35.1 | 60 | No | |||||
| NSAIDs Intake (duration); | |||||||||
| - | - | 2.04 | 0.57 | 50.30% | 87 | 38.70% | 67 | None | |
| 2.9 | 5 | 2.9 | 5 | 6 months | |||||
| 0.60% | 1 | 0.00% | 0 | 1 year | |||||
| 1.70% | 3 | 2.90% | 5 | >1 year | |||||
| Living condition: Experience any emotional stress in the past 6-month? | |||||||||
| (1.9, 6.8) | 3.6 | 16.03 | 0.0001 | 15 | 26 | 25.4 | 44 | Yes | |
| 40.5 | 70 | 19.1 | 33 | No | |||||