Epidemiological and Clinical-Pathological Aspects of Helicobacter pylori Infection in Brazilian Children and Adults

Table 1

Distribution of demographic and clinical-pathological characteristics of subjects evaluated for H. pylori infection.

Variables	H. pylori status		Total	value
	Negative	Positive
(%)	1554 (64.6)	852 (35.4)	2406
Age (years)
≤19	69 (4.4)	22 (2.6)	91	<0.001^1
20–29	184 (11.9)	95 (11.1)	279
30–39	248 (16.0)	166 (19.5)	414
40–49	305 (19.6)	203 (23.9)	508
50–59	334 (21.5)	187 (21.9)	521
>60	414 (26.6)	179 (21.0)	593
Mean ± SD	48 ± 17	47 ± 15		0.06^2
Range	9–95	10–88
Gender
Female	1058 (68.1)	560 (65.7)	1618	0.26
Male	496 (31.9)	292 (34.3)	788
Residence
Rural	109 (7.3)	65 (8.0)	174	0.59
Urban	1388 (92.7)	748 (92.0)	2136
Tobacco smoking
Yes	130 (37.3)	86 (36.6)	216	0.93
No	219 (62.7)	149 (63.4)	368
Alcoholism
Yes	78 (25.8)	59 (29.1)	137	0.47
No	224 (74.2)	144 (70.9)	368
Endoscopic diagnosis
Normal stomach	39 (2.5)	15 (1.8)	54	0.84
Endoscopic lesion	1515 (97.5)	837 (98.2)	2352
Eradication therapy
Yes	—	196 (80.0)	196	—
No	—	49 (20.0)	49
After therapy
Eradicated	—	127 (83.5)	127	—
Not eradicated	—	25 (16.5)	25

 = sample number (subjects without information in the medical records were excluded from the analysis). ¹chi-square test used to compare age categories. ²t test used to compare means of age.