Table 2.

Seroprevalence of H. pylori infection and CagA-specific IgG stratified to sex and age

Cohort (age in yr)H. pylori infection prevalenceCagA positivity
No. of positive subjects/total no. of subjects (%)P value (χ2 test)aNo. of positive subjects/no. of H. pylori-infected subjects (%)P value (χ2 test)a
MaleFemaleMaleFemale
All533/1,181 (45.1)496/1,137 (43.6)NS228/533 (41.2)218/496 (44.0)NS
0-204/21 (19.0)3/27 (11.1)NS2/4 (50.0)3/3 (100)NS
21-3030/115 (26.1)24/126 (19.0)NS9/30 (30.0)13/24 (54.2)0.07
31-4047/103 (45.6)28/82 (34.1)0.1117/47 (36.2)12/28 (42.9)NS
41-5069/153 (45.1)53/115 (46.1)NS37/69 (53.6)30/53 (56.6)NS
51-6089/189 (47.1)78/140 (55.7)0.1235/89 (39.3)37/78 (47.4)NS
61-70100/217 (46.1)67/154 (43.5)NS46/100 (46.0)23/67 (30.3)0.13
71-80117/242 (48.3)134/255 (52.5)NS43/117 (36.8)57/134 (42.5)NS
81-9076/135 (56.3)99/217 (45.6)0.0539/76 (51.3)38/99 (38.4)0.09
>911/6 (16.7)10/21 (47.6)NS0/1 (0.0)5/10 (50.0)NS
<3034/136 (25.0)27/153 (17.6)0.1311/34 (32.5)16/27 (59.3)0.016
>30499/1,045 (47.8)469/984 (47.7)NS217/499 (43.5)202/469 (43.1)NS
  • a P values of >0.15 are not shown. P values of ≤0.05 (bold) are significant (chi-sequare test). NS, not significant.