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Percentage within each age group who seroconverted, seroreverted or remained the same at one year.
| Antibody groups | Group 1: +/+ | Group 2: +/− | Group 3: −/+ | Group 4: −/− | Total |
|---|---|---|---|---|---|
| Ages | |||||
| 1–3 | 13.5% (113) | 2.0% (17) | 8.4% (70) | 76.1% (636) | 100% (836) |
| 4–6 | 31.5% (228) | 2.1% (15) | 7.5% (54) | 58.9% (426) | 100% (723) |
| 7–9 | 49.6% (274) | 1.8% (10) | 3.4% (19) | 45.1% (249) | 100% (554) |
Group 1 vs group 2: p = 0.001. Group 1 vs group 3: p < 0.0001.
Group 1 vs group 4: p < 0.0001.
