Descriptive statistics of 30 693 adoptees with and without diagnosis of IBS
| No IBS (n=29 917) | IBS (n=776) | p Value | |
| Sex | |||
| Female | 14 331 (47.90%) | 552 (71.13%) | <0.0001* |
| High education (12 years or more) | 8756 (29.27%) | 248 (31.96%) | 0.104* |
| NDI (high socioeconomic status) | 403 (1.35%) | 4 (0.52%) | 0.053† |
| Occupation‡ | 5657 (18.91%) | 118 (15.21%) | *0.009 |
| Age at end of follow-up (years) (median and IQR) | 49 (43–54) | 48 (43–54) | 0.239§ |
*Χ2 test.
†Fisher’s exact test.
‡Chief or occupation with a requirement for in-depth university competence.
§Wilcoxon test.
IBS, irritable bowel syndrome; NDI, Neighbourhood Deprivation Index.