Table 3.
The estimated age-specific seropositivity rate of anti-PT IgG in 2012, 2016, and 2020.
| Age, years | Seropositivity rate (95% CI), % |
Relative Rate of Change (2012–2020),% | ||
|---|---|---|---|---|
| 2012 | 2016 | 2020 | ||
| Younger than 1 | 16.72 (11.12, 24.38) | 11.11 (7.36, 16.45) | 7.22 (4.62, 11.11) | 56.82 |
| 1–2 | 15.27 (10.31, 22.03) | 10.09 (6.79, 14.73) | 6.53 (4.24, 9.91) | 57.24 |
| 3–4 | 12.83 (8.73, 18.46) | 8.39 (5.70, 12.20) | 5.40 (3.53, 8.17) | 57.94 |
| 5–9 | 11.30 (7.62, 16.42) | 7.35 (4.94, 10.80) | 4.70 (3.04, 7.21) | 58.36 |
| 10–14 | 10.80 (7.36, 15.59) | 7.01 (4.76, 10.22) | 4.48 (2.92, 6.82) | 58.50 |
| 15–19 | 11.67 (7.95, 16.81) | 7.60 (5.17, 11.05) | 4.87 (3.19, 7.38) | 58.26 |
| 20–24 | 12.23 (8.33, 17.61) | 7.99 (5.44, 11.58) | 5.13 (3.37, 7.73) | 58.10 |
| 25–29 | 12.61 (8.61, 18.10) | 8.24 (5.63, 11.91) | 5.30 (3.49, 7.96) | 58.00 |
| 30–34 | 13.00 (8.85, 18.69) | 8.51 (5.80, 12.33) | 5.47 (3.60, 8.23) | 57.89 |
| 35–39 | 13.51 (9.18, 19.43) | 8.86 (6.02, 12.85) | 5.71 (3.75, 8.60) | 57.75 |
| 40 and older | 14.12 (9.63, 20.25) | 9.29 (6.32, 13.44) | 5.99 (3.94, 9.02) | 57.57 |
CI = confidence interval.