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

Table 2 The reconstructive procedure and mean delta over baseline values (‰) for the subjects in the infection group

Subgroup	Time	DOB ( B-I)	DOB ( B-II)	t value	P value
A	T5	9.67 ± 1.79	9.30 ± 3.00	0.314	0.760
	T10	12.57 ± 1.92	12.18 ± 3.06	0.324	0.752
	T15	12.28 ± 1.95	11.89 ± 3.08	0.319	0.756
	T20	11.50 ± 1.93	10.80 ± 2.94	0.588	0.568
	T25	10.91 ± 1.90	10.20 ± 2.98	0.592	0.566
	T30	10.58 ± 1.88	9.86 ± 2.93	0.609	0.555
B	T5	9.74 ± 2.33	8.74 ± 2.85	0.841	0.412
	T10	10.69 ± 2.11	10.01 ± 2.60	0.628	0.538
	T15	14.20 ± 1.56	13.56 ± 1.56	0.880	0.391
	T20	13.99 ± 1.59	13.35 ± 1.62	0.861	0.401
	T25	13.57 ± 1.60	12.91 ± 1.62	0.885	0.389
	T30	13.34 ± 1.56	12.69 ± 1.59	0.890	0.386
C	T5	8.96 ± 1.69	8.69 ± 1.71	0.344	0.735
	T10	10.03 ± 1.53	9.81 ± 1.67	0.288	0.777
	T15	12.33 ± 1.74	12.05 ± 1.73	0.347	0.733
	T20	11.79 ± 1.69	11.50 ± 1.72	0.364	0.720
	T25	11.26 ± 1.62	10.99 ± 1.69	0.352	0.729
	T30	10.95 ± 1.62	10.72 ± 1.62	0.295	0.771
D	T5	10.21 ± 1.54	8.39 ± 2.18	2.136	0.048
	T10	12.12 ± 1.57	9.98 ± 2.56	2.446	0.026
	T15	14.51 ± 1.39	12.91 ± 1.76	2.213	0.041
	T20	15.32 ± 1.37	13.83 ± 1.82	2.049	0.056
	T25	15.04 ± 1.38	13.56 ± 1.77	2.057	0.055
	T30	14.84 ± 1.37	13.33 ± 1.82	2.068	0.054

DOB: Delta over baseline.