Table 5.

Degree of neutrophil granulocyte infiltration in Helicobacter pylori-positive and -negative patients

Age group	H. pylori +				H. pylori +				Z	P value
	n	Absent	Mild	Moderate	n	Absent	Mild	Moderate
1-4	22	19 (86.36)	3 (13.64)	0 (0)	32	30 (93.75)	2 (6.25)	0 (0)	0.912	0.362
5-8	156	133 (85.26)	21 (13.46)	2 (1.28)	43	42 (97.67)	1 (2.33)	0 (0)	2.212	0.027a
9-12	383	331 (86.42)	44 (11.49)	8 (2.09)	52	50 (96.15)	2 (3.85)	0 (0)	2.009	0.045b
13-18	293	234 (79.86)	48 (16.38)	11 (3.76)	34	33 (97.06)	1 (2.94)	0 (0)	2.456	0.014c
Total	854	717 (83.96)	116 (13.58)	21 (2.46)	161	155 (96.27)	6 (3.73)	0 (0)	4.319	< 0.001d

^a P < 0.05: Degree of neutrophil granulocyte infiltration in Helicobacter pylori (H. pylori)-positive patients were compared with -negative patients in the 5-8 years age group.

^b P < 0.05: Degree of neutrophil granulocyte infiltration in H. pylori-positive patients was compared with -negative patients in the 9-12 years age group.

^c P < 0.05: Degree of neutrophil granulocyte infiltration in H. pylori-positive patients was compared with -negative patients in the 13-18 years age group.

^d P < 0.05: Degree of neutrophil granulocyte infiltration was compared between H. pylori-positive and -negative groups.

Data are n (%), unless otherwise indicated. H. pylori: Helicobacter pylori.