Table 3.

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.