Number (%) of subjects seropositive for H pylori and hepatitis A virus (HAV) by age and sex
| Age range (years) | Seropositive for H pylori | Seropositivie for HAV | |||||
|---|---|---|---|---|---|---|---|
| No. of subjects | Males | Females | No. of subjects | Males | Females | ||
| 1–10 | 32 | 7/20 (35) | 0/12 (0) | 24 | 4/15 (27) | 0/9 (0) | |
| 11–20 | 30 | 4/11 (36) | 8/19 (42) | 20 | 2/7 (29) | 4/13 (31) | |
| 21–30 | 97 | 7/16 (44) | 34/81 (42) | 62 | 8/10 (80) | 40/52 (77) | |
| 31–40 | 93 | 16/27 (59) | 37/66 (56) | 57 | 21/21 (100) | 34/36 (94) | |
| 41–50 | 104 | 27/31 (87) | 51/73 (70) | 76 | 23/25 (92) | 50/51 (98) | |
| 51–60 | 129 | 34/49 (69) | 61/80 (76) | 81 | 27/28 (96) | 50/53 (94) | |
| 61–70 | 138 | 35/50 (70) | 64/88 (73) | 89 | 31/31 (100) | 57/58 (98) | |
| 71–80 | 62 | 20/24 (83) | 23/38 (74) | 43 | 16/17 (94) | 26/26 (100) | |
| > 80 | 20 | 7/9 (78) | 6/11 (55) | 14 | 9/9 (100) | 5/5 (100) | |
| Total | 705 | 157/237 (66) | 289/468 (62) | 466 | 141/163 (86) | 266/303 (88) | |
χ2 for linear trend: 72.32, p<0.001 for age, 1.25, p=0.26 for sex; 204.18, p<0.001 for age, 0.17, p=0.67 for sex, respectively, in the two groups.