Table 1.

Comparison of crucial clinical and demographic parameters between included and excluded samples

	Faeces		No faeces		P value	Biopsy		No biopsy		P value
	N	M (SD)/%	N	M (SD)/%		N	M (SD)/%	N	M (SD)/%
Age (years)	260	52.8 (12.1)	484	51.1 (13.0)	0.12	545	51.7 (12.6)	200	51.7 (12.6)	0.86
Sex (man)	260	45.8%	484	41.3%	0.24	545	44.0%	200	39.5%	0.27
Self-rated health	259	2.54 (0.94)	443	2.58 (0.94)	0.63	522	2.51 (0.93)	181	2.73 (0.97)	0.01
BMI	259	24.4 (3.6)	478	25.1 (4.1)	0.03	540	24.7 (3.98)	198	25.2 (3.86)	0.09
Abdominal pain	259	27.4%	441	30.2%	0.44	521	28.4%	180	31.1%	0.49

BMI, body mass index.