TABLE 3.
Differences between PI-IBS and non-PI-IBS.
| Variable | All (n = 8,256) | p-value | |
|---|---|---|---|
| PI-IBS n = 1,441 (%) | Non-PI-IBS n = 6,815 (%) | ||
| Sex | 0.011 | ||
| Female | 1,117 (77.5) | 5,484 (80.5) | |
| Male | 324 (22.5) | 1,331 (19.5) | |
| Age (years) | <0.001 | ||
| Mean (SD) | 53.27 (7.614) | 54.76 (7.722) | |
| Median (IQR) | 53 (47, 59.5) | 55 (49, 61) | |
| Townsend Deprivation Score | <0.001 | ||
| Mean (SD) | −0.98 (3.168) | −1.56 (2.918) | |
| Median (IQR) | −1.76 (−3.48, 0.96) | −2.35 (−3.73, 0.13) | |
| Missing data | 2 (0.1) | 11 (0.2) | |
| Ever been offered/sought treatment for anxiety | <0.001 | ||
| Yes | 698 (48.4) | 2,916 (42.8) | |
| No | 741 (51.4) | 3,867 (56.7) | |
| Missing data | 2 (0.1) | 32 (0.5) | |
| Ever been offered/sought treatment for depression | <0.001 | ||
| Yes | 726 (50.4) | 3,017 (44.3) | |
| No | 711 (49.3) | 3,767 (55.3) | |
| Missing data | 4 (0.3) | 31 (0.5) | |
| Family history of IBS | 0.002 | ||
| Yes | 574 (39.8) | 2,382 (35.0) | |
| No | 509 (35.3) | 2,629 (38.6) | |
| Missing data | 358 (24.8) | 1,804 (26.5) | |
| Long-term/recurrent antibiotics as child or teenager | <0.001 | ||
| Yes | 496 (34.4) | 1,619 (23.8) | |
| No | 712 (49.4) | 4,162 (61.1) | |
| Missing data | 233 (16.2) | 1,034 (15.2) | |
| Diagnosed with coeliac disease or gluten sensitivity | <0.001 | ||
| Yes | 139 (9.6) | 395 (5.8) | |
| No | 1,246 (86.5) | 6,264 (91.9) | |
| Missing data | 56 (3.9) | 156 (2.3) | |
| PHQ-12 Score | <0.001 | ||
| ≤6 | 271 (18.8) | 2,043 (30.0) | |
| >6 | 1,097 (76.1) | 4,433 (65.0) | |
| Missing data | 73 (5.1) | 339 (5.0) | |
Data were mean (SD) or n (%) unless noted otherwise. The distribution of age and the Townsend Deprivation Score is non-normal; therefore, the mean (SD) and median (P25 and P75) are used to describe. The p-value was calculated by the chi-square test and Wilcoxon’s rank-sum test where applicable. In this analysis, “Do not know,” “Prefer not to answer,” and “missing” were coded as missing data.