Seroepidemiology of Helicobacter pylori infection among asymptomatic Chinese children

Table 2 Comparison of community distribution in asymptomatic children with H. pylori infection V

Age (year)	Urban			Rural			P value
	No. of samples	No. of positive samples	%	No. of samples	No. of positive samples	%
7	88	21	23.86	77	30	38.95	0.036
8	69	11	15.94	77	40	51.95	0.001
9	90	33	36.67	77	32	41.56	0.518
10	83	32	38.55	84	45	53.57	0.052
11	92	40	43.48	134	70	52.54	0.195
12	40	9	22.50	127	70	55.12	0.001
13	39	12	30.77
14	42	13	30.95
Total	543	171	31.95	576	287	49.85	0.01

Notice: Children aged 7-11 years are from public schools and of 12-14 years are from private schools.