Table 2
Reproducibility and concurrent validity of nongastrointestinal symptoms assessed with the K-BDQ*

	Reproducibility (n=69)		Concurrent validity (n=74)
	Kappa value	P value	Kappa value	P value
Weight loss	0.657	<0.001	-	-
Surgical history	0.811	<0.001	0.757	<0.001
Appendectomy	0.915	<0.001	1.000	<0.001
Pregnancy	0.800	<0.001	1.000	<0.001
Number of normal deliveries	1.000	<0.001	1.000	<0.001
Number of cesarean sections	0.907	<0.001	1.000	<0.001
Marital status	0.968	<0.001	0.942	<0.001
Education	0.915	<0.001	0.910	<0.001
Tobacco history	0.874	<0.001	0.941	<0.001
Alcohol history	-	-	0.746	<0.001
Past medical history	0.374	0.010	0.745	<0.001
Cancer	0.621	0.026	1.000	0.005
Diabetes	1.000	0.001	1.000	0.003
Active peptic ulcer	0.800	0.005	0.545	0.171
Frequency of doctor visits	0.746	<0.001	0.656	<0.001
History of GI problems	0.866	<0.001	1.000	<0.001

Korean version of a bowel disease questionnaire.