Table 3.
HBV Infection and Immune Response of Infants
| Baby at 1 Month | Baby at 7 Months | Baby at 1~2-Year Old | ||||||
|---|---|---|---|---|---|---|---|---|
| N | HBsAb + N (%) | HBsAb [M (P25~P75), IU/L] | N | HBsAb + N (%) | HBsAb [M (P25~P75), IU/L] | N | HBV Infection of Infants N (%) | |
| HBV- group | ||||||||
| Breast-feeding | 79 | 79 (100) | 134.0 (114.7~155.9) | 60 | 59 (98.3) | 830.1 (327.8~1000.0) | 57 | 1 (1.8) |
| Formula-feeding | 73 | 72 (98.6) | 120.2 (98.6~136.1) | 62 | 62 (100) | 869.8 (374.4~1000.0) | 59 | 2 (3.4) |
| χ2 or t value | —* | −2.965 | —* | −0.027 | —* | |||
| P value | 0.48 | 0.003 | 0.492 | 0.979 | 1.000 | |||
| LVL group | ||||||||
| Breast-feeding | 68 | 67 (98.5) | 117.0 (97.9~131.5) | 54 | 53 (98.2) | 666.8 (193.6~1000.0) | 52 | 0 (0.0) |
| Formula-feeding | 53 | 53 (100.0) | 107.6 (97.31~134.8) | 55 | 54 (98.2) | 457.6 (269.9~992.0) | 44 | 0 (0.0) |
| χ2 or t value | —* | 0.619 | —* | 1.145 | — | |||
| P value | 1 | 0.536 | 1 | 0.252 | — | |||
| HVL group | ||||||||
| Breast-feeding | 63 | 58 (92.1) | 120.6 (95.1~140.7) | 44 | 42 (95.5) | 218.7 (65.3~861.1) | 54 | 6 (11.1) |
| Formula-feeding | 79 | 77 (97.5) | 122.3 (102.6~144.6) | 57 | 53 (93.0) | 514.1 (105.0~1000.0) | 45 | 1 (2.2) |
| χ2 or t value | 2.185 | −1.166 | —* | −1.545 | 2.952 | |||
| P value | 0.139 | 0.244 | 0.694 | 0.122 | 0.086 | |||
Notes: “—”no value; *Fisher exact test.
Abbreviation: HBsAb, hepatitis B surface antibody.