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Table 4 Incidence of HBsAg seroconversion in repeat donors born before and after 1992 tested at the same ages

From: Prevalence of hepatitis B surface antigen (HBsAg) in a blood donor population born prior to and after implementation of universal HBV vaccination in Shenzhen, China

Age year

Born <1992

Born ≥ 1992

Overall

P value

HBsAg+/total

%

HBsAg+/total

%

HBsAg+/total

%

Inter-group

18

1/490

0.20

0/318

<0.01

1/808

0.12

0.606

19

16/2042

0.78

5/1283

0.39

21/3325

0.63

0.163

20

26/4126

0.63

6/1620

0.37

32/5746

0.56

0.234

21

30/5868

0.51

1/1262

0.08

31/7130

0.43

0.034

22

43/7779

0.55

2/630

0.32

45/8409

0.54

0.334

All ages

116/20,305

0.57

14/5113

0.27

130/25,418

0.51

0.008

  1. Intra-population of repeat donors, P = 0.202–0.298 from 18 v.s. 20, 21, or 22 years born <1992; P = 0.341–0.441from 18 v.s. 21 or 22 years born ≥1992
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BMC Infectious Diseases

ISSN: 1471-2334

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