Chinese literature associated with diagnosis of Helicobacter pylori

Table 1 Related literature of ¹³C-urea breath test

Study No. (i)	H pylori positive		H pylori negative		Se (%)	p (%)	π (%)	PV-(%)	PV+(%)
	a	c	b	d
1	36	0	0	24	100	98.50	99.40	100	100
2	148	5	0	165	96.70	100	98.41	97.06	100
3	13	0	1	23	100	95.83	97.41	100	92.86
4	39	3	0	10	92.86	100	94.23	76.92	100
5	42	0	0	10	100	96.97	99.42	100	100
6	52	2	3	13	96.30	81.25	92.86	94.55	86.67
7	47	1	0	32	97.92	100	98.75	97.14	100
8	147	3	0	3	98	90.70	97.86	96.10	95.30
9	74	3	0	49	96	100	97.56	94.23	100