Basic Study
Copyright ©The Author(s) 2017.
World J Gastroenterol. Feb 7, 2017; 23(5): 800-809
Published online Feb 7, 2017. doi: 10.3748/wjg.v23.i5.800
Table 1 Prevalence of cagA and vacA alleles of Helicobacter pylori according to site of the stomach
AllelesTumaco n = 41
P valueTúquerres n = 31
P value
Antrum
BodyAntrum
Body
Lesser curvatureGreater curvatureGreater curvatureLesser curvatureGreater curvatureGreater curvature
cagA
cagA (+)85.4%100%100%0.00296.4%100%100%0.36
cagA (-)14.6%0%0%0%0%0%
vacA
m173.2%78.1%70.7%0.36071.0%61.3%58.1%0.26
m226.8%21.9%24.3%12.9%22.6%35.5%
vacA
s180.5%78.5%80.5%0.73074.2%80.7%64.5%0.44
s219.5%19.5%19.5%19.4%19.4%25.8%
Table 2 Type of colonization of Helicobacter pylori according to gender, age and cancer risk
FeaturesType of colonization
Total n = 72P value
SingleMultiple
n = 34n = 38
Gender0.067
Male26.5%47.4%37.5%
Female73.5%52.6%62.5%
Age (yr)0.633
18-3541.2%36.8%38.9%
36-4726.5%36.8%31.9%
48-6332.4%26.3%29.2%
Cancer risk0.027
Low (Tumaco)70.6%44.7%56.9%
High (Túquerres)29.4%55.3%43.1%
Type of gastritis0.203
Non atrophic79.4%89.5%84.7%
MAG20.6%7.9%13.9%
Table 3 Risk of multiple colonization of Helicobacter pylori in the stomach
CharacteristicsOdds ratio95%CIP > z
Gender
Female1.000
Male2.4770.8587.1540.094
Age (yr)
18-351.000
36-471.4010.4124.7690.589
48-631.1600.3304.0760.816
Cancer risk
Low (Tumaco)1.000
High (Túquerres)2.7210.9737.6090.056
Type of gastritis
Non atrophic1.000
MAG0.3250.0661.5940.166