Table 2 Comparison of the hepatitis B antibody titer according to age and sex
Age group | Number of patients | Antibody titer (IU/L) | p value | ||
|---|---|---|---|---|---|
| Â | Overall | Boys | Girls | Â | |
0 (7 m–1 yr) | 735 | 456.14 ± 376.04 | 476.19 ± 382.34 | 432.65 ± 367.05 | 0.119 |
1 (1–2 yr) | 1522 | 241.91 ± 299.15 | 253.49 ± 305.12 | 226.70 ± 290.65 | 0.083 |
2 (2–3 yr) | 890 | 116.71 ± 185.38 | 108.24 ± 177.79 | 125.46 ± 192.71 | 0.166 |
3 (3–4 yr) | 558 | 75.98 ± 156.05 | 81.71 ± 169.15 | 68.85 ± 138.09 | 0.334 |
4 (4–5 yr) | 463 | 50.89 ± 107.57 | 52.02 ± 107.19 | 49.43 ± 108.32 | 0.797 |
5 (5–6 yr) | 297 | 52.37 ± 137.19 | 51.59 ± 129.58 | 53.18 ± 145.09 | 0.921 |
6 (6–7 yr) | 243 | 65.19 ± 156.03 | 71.49 ± 170.57 | 57.82 ± 137.49 | 0.497 |
7 (7–8 yr) | 135 | 33.34 ± 97.52 | 36.29 ± 125.40 | 29.98 ± 50.26 | 0.709 |
8 (8–9 yr) | 157 | 25.25 ± 44.78 | 30.46 ± 55.98 | 22.27 ± 36.91 | 0.272 |
9 (9–10 yr) | 110 | 33.37 ± 71.71 | 25.24 ± 65.27 | 39.66 ± 76.25 | 0.298 |
10 (10–11 yr) | 104 | 39.62 ± 119.40 | 18.12 ± 34.20 | 54.77 ± 151.95 | 0.124 |
11 (11–12 yr) | 72 | 49.89 ± 169.40 | 58.61 ± 174.79 | 41.18 ± 165.85 | 0.666 |
12 (12–13 yr) | 54 | 51.03 ± 148.81 | 38.62 ± 70.26 | 61.72 ± 193.47 | 0.574 |
13 (13–14 yr) | 69 | 29.89 ± 101.35 | 21.72 ± 44.60 | 38.80 ± 139.63 | 0.488 |
14 (14–15 yr) | 62 | 17.73 ± 49.45 | 27.23 ± 65.25 | 11.74 ± 35.90 | 0.232 |
15 (15–16 yr) | 59 | 62.31 ± 185.49 | 38.99 ± 66.50 | 84.84 ± 251.94 | 0.347 |
16 (16–17 yr) | 65 | 44.32 ± 133.60 | 45.38 ± 160.66 | 42.72 ± 80.34 | 0.938 |
17 (17–18 yr) | 55 | 46.40 ± 148.88 | 43.00 ± 93.24 | 50.49 ± 198.32 | 0.855 |
Total | 5650 |  | 176.66 ± 281.93 | 154.45 ± 260.08 | 0.002 |