Table 3.

Stool myeloperoxidase and α1-antitrypsin concentrations

		All participants (n=43)	Gastro-intestinal*symptoms (n=31)	No gastro-ntestinal symptoms (n=12)	p-value†
Myeloperoxidase
	Concentration, ng/mL	1574 (597–3806)	2225 (812–4033)	663 (295–2335)	0·088
	Number elevated‡	19 (44%)	16 (52%)	3 (25%)	0·11
α1-antitrypsin
	Concentration, μg/mL	217 (146–438)	257 (142–475)	211 (186–261)	0·80
	Number elevated§	15 (35%)	13 (42%)	2 (17%)	0·12
Total number of elevated myeloperoxidase or α1-antitrypsin		23 (53%)	19 (61%)	4 (33%)	0·10

Data are n (%) or median (IQR) unless otherwise specified.

^*Gastrointestinal symptoms of diarrhoea or abdominal pain.

^†Comparisons between results in those with gastrointestinal symptoms and those without gastrointestinal symptoms were calculated by Mann-Whitney U test for continuous variables and by Fisher's exact test for categorical variables.

^‡Defined as myeloperoxidase >2000 ng/mL.

^§Defined as α1-antitrypsin >270 μg/mL.