Gastroenterol Res

Gastroenterology Research, ISSN 1918-2805 print, 1918-2813 online, Open Access

Article copyright, the authors; Journal compilation copyright, Gastroenterol Res and Elmer Press Inc

Journal website http://www.gastrores.org

Original Article

Volume 6, Number 5, October 2013, pages 174-179

Helicobacter Pylori Infection in Waste Pickers: A Case Control Seroprevalence Study

Tables

**Table 1.** Socio-demographic Characteristics of Waste Pickers and Seroprevalence of *H. pylori* Infection
Characteristic	No. of subjects tested*	Prevalence of H. pylori infection		P value
Characteristic	No. of subjects tested*	No.	%	P value
^*Participants with available data.
Gender
Male	34	22	64.7	0.75
Female	56	38	67.9
Age groups (years)
30 or less	46	26	56.5	0.11
31 - 50	22	16	72.7
> 50	21	17	80.0
Residence place
Durango State	88	58	65.9	0.55
Other Mexican State	2	2	100.0
Residence area
Urban	83	55	66.3	0.35
Suburban or rural	6	5	83.3
Educational level
No education	28	19	67.9	0.80
1 - 6 years	50	34	68.0
More than 6 years	12	7	58.3
Socioeconomic level
Low	67	44	65.7	0.70
Medium	17	12	70.6

**Table 2.** Work Characteristics of Waste Pickers and Seroprevalence of *H. pylori* infection
Characteristic	No. of subjects tested*	Prevalence of H. pylori infection		P value
Characteristic		No.	%
^*Participants with available data.
Years working
Up to 10 years	47	26	55.3	0.03
11 to 20 years	29	21	72.4
More than 20 years	13	12	92.3
Number of visiting waste places
One	80	53	66.3	0.67
More than 1	6	4	66.7
Wear hand gloves
Yes	16	10	62.5	0.64
No	73	50	68.5
Wear facemask
Yes	1	1	100.0	1.00
No	88	59	67.0
Eating while working
Yes	51	34	66.7	0.86
No	38	26	68.4
Eating from the garbage
Yes	26	15	57.7	0.20
No	63	45	71.4
Washing hands before eating
Yes	68	45	66.2	0.65
No	21	15	71.4
Alcohol consumption
Yes	29	15	51.7	0.02
No	60	45	75.0
Injury while working
Yes	64	40	62.5	0.13
No	24	19	79.2

**Table 3.** Results of the multivariate regression analysis.
Variable	P value	Odds ratio	95% confidence interval
Cats at home	0.2	1.88	0.70 - 5.05
Raising animals	0.68	1.23	0.44 - 3.42
Alcohol consumption	0.01	0.27	0.09 - 0.78
Years in the activity	0.01	2.76	1.22 - 6.25