Effect of posture on 13C-urea breath test in partial gastrectomy patients

Table 1 Characteristics of the patients in the infection and control groups

	Infection group				Statistic	P value	Control group				Statistic	P value
	A	B	C	D			A	B	C	D
	(n = 19)	(n = 19)	(n 19)	(n = 19)			(n = 20)	(n = 20)	(n = 20)	(n = 20)
Age (yr)	59.9 ± 11.2	63.1 ± 9.2	66.1 ± 10.9	66.0 ± 12.5	F = 1.341	0.268	58.7 ± 12.1	62.0 ± 8.5	65.2 ± 10.7	61.7 ± 14.1	F = 1.081	0.362
Sex (M:F)	12:7	14:5	14:5	13:6	χ2 = 0.686	0.877	15:5	14:6	15:5	13:7	χ2 = 0.671	0.880
Indication for gastrectomy					χ2 = 0.452	0.929					χ2 = 0.251	0.969
Peptic ulcer	7	8	6	7	-	-	5	6	5	6	-	-
Early-stage gastric cancer	12	11	13	12	-	-	15	14	15	14	-	-
Reconstructive procedure					-	-					-	-
B-I	11	11	11	11	-	-	10	10	10	10	-	-
B-II	8	8	8	8	-	-	10	10	10	10	-	-
Interval (yr)	8.9 ± 5.9	7.4 ± 5.1	7.3 ± 3.9	7.9 ± 4.9	F = 0.429	0.733	8.6 ± 6.0	7.6 ± 5.8	7.8 ± 5.0	8.4 ± 4.6	F = 0.150	0.929