TABLE 1.
Parameter | No. of subjects with high antibody levels/no. of antibody-positive subjects (%) | OR* (95% CI)b | P value |
---|---|---|---|
Gender | |||
Female | 54/229 (23.6) | 1 | |
Male | 42/150 (28.0) | 1.175 (0.725–1.904) | 0.514 |
Age | |||
1–9 yr | 25/65 (38.5) | 1 | |
10–19 yr | 25/93 (26.9) | 0.610 (0.306–1.217) | 0.161 |
20–39 yr | 8/43 (18.6) | 0.325 (0.124–0.854) | 0.018 |
40–59 yr | 17/86 (19.8) | 0.400 (0.192–0.833) | 0.013 |
≥60 yr | 21/92 (22.8) | 0.480 (0.238–0.966) | 0.039 |
OR*, adjusted OR (adjusted for age and gender). The third quartile of OD values of seropositive samples (0.776) was used as the cutoff for high levels of antibodies.
Boldface values indicate significant OR* at P ≤ 0.05.