Table 1.
The characteristic of study population between completed follow-up and not complete follow-up.
| Characteristic | Complete follow-up visit (n = 242) | Not complete follow-up visit (n = 249) | χ2 | P |
|---|---|---|---|---|
| Age at primary immunization (years) | 3.30 | 0.192 | ||
| 18∼29 | 30(12.40) | 19(7.63) | ||
| 30∼39 | 65(26.86) | 75(30.12) | ||
| 40∼49 | 147(60.74) | 155(62.25) | ||
| Sex | 0.97 | 0.360 | ||
| Males | 111(45.87) | 108(43.37) | ||
| Females | 131(54.13) | 141(56.63) | ||
| BMI (kg/m2) | 20.23 | <0.001 | ||
| <23.9 | 136(56.20) | 112(44.98) | ||
| 24.0∼27.9 | 96(39.67) | 97(38.96) | ||
| ≥28 | 10(4.13) | 40(16.06) | ||
| Anti-HBs concentrations after primary immunization (mIU/mL) | 14.50 | 0.106 | ||
| 100∼ | 39(16.12) | 59(23.69) | ||
| 200∼ | 36(14.88) | 38(15.26) | ||
| 300∼ | 32(13.22) | 39(15.66) | ||
| 400∼ | 19(7.85) | 24(9.64) | ||
| 500∼ | 13(5.37) | 11(4.42) | ||
| 600∼ | 14(5.79) | 19(7.63) | ||
| 700∼ | 16(6.61) | 11(4.41) | ||
| 800∼ | 18(7.44) | 7(2.81) | ||
| 900∼ | 14(5.78) | 8(3.21) | ||
| ≥1000 | 41(16.94) | 33(13.25) | ||
| Pre-challenge anti-HBs antibody concentrations (mIU/mL) | 12.75 | 0.174 | ||
| 0∼ | 39(16.12) | 36(14.46) | ||
| 1∼ | 35(14.46) | 31(12.45) | ||
| 2∼ | 40(16.53) | 27(10.84) | ||
| 3∼ | 32(13.22) | 22(8.84) | ||
| 4∼ | 18(7.44) | 31(12.45) | ||
| 5∼ | 19(7.85) | 21(8.43) | ||
| 6∼ | 14(5.79) | 20(8.03) | ||
| 7∼ | 22(9.09) | 24(9.64) | ||
| 8∼ | 13(5.37) | 19(7.63) | ||
| 9∼ | 10(4.13) | 18(7.23) |