Table 1
Reproducibility and concurrent validity of gastrointestinal symptoms assessed with the K-BDQ*

	Reproducibility (n=69)		Concurrent validity (n=74)
	Kappa value	P value	Kappa value	P value
Abdominal pain in the last year	0.509	<0.001	0.910	<0.001
Pain onset before six months	0.508	<0.001	0.890	<0.001
Pain location, epigastric area	0.690	<0.001	0.727	0.001
Periumbilical area	0.740	<0.001	0.576	0.007
Severity of pain	0.639	<0.001	0.828	<0.001
Loose stool when pain began	0.442	<0.001	0.552	<0.001
Hard stool when pain began	0.419	<0.001	-	-
Number of bowel movements/week	0.541	<0.001	0.507	<0.001
Type of stool form	-	-	0.608	<0.001
Presence of hematochezia	0.950	<0.001	0.778	<0.001
Constipation before six months	0.653	<0.001	0.788	<0.001
Taking medication for constipation
None	0.910	<0.001	0.915	<0.001
Fiber	0.782	<0.001	0.793	<0.001
Laxatives	0.914	<0.001	1.000	<0.001
Loose stools	0.505	<0.001	0.431	<0.001
Epigastric pain	0.690	<0.001	0.727	0.001
Early satiety	0.395	<0.001	0.504	<0.001
Postprandial fullness	0.342	<0.001	0.567	<0.001
Hunger pain	0.217	0.188	0.783	0.011
Pain related to eating	0.752	<0.001	-	-
Bloating	0.335	<0.001	-	-

Korean version of a bowel disease questionnaire.