Table 5

The proportion of subjects who seroconverted or cleared serum HBV DNA by age of recruitment and interval after recruitment

a) HBsAg seroconversion

Age (yrs) at recruitment
Interval after recruitment



First 5 years
5–9 years
10–19 years

*1–4
18/60 (30%)
1/33 (3.3%)
1/29 (3%)
*5–9
13/62 (21%)
0/27
0/22
10–14
7/23 (30%)
0/4
0/5
15–19
4/15 (27%)
0/0
0/0

b)



HBeAg seroconversion

Age (yrs) at recruitment
First 5 years
5–9 years
10–19 years
*1–4
12/36 (33%)
6/16 (37%)
7/10 (70%)
*5–9
10/29 (34%)
4/12 (33%)
5/7 (71%)
10–14
4/11 (36%)
1/2 (50%)
1/1 (100%)
15–19
1/4 (25%)
0/0
0/0

c)



Serum HBV DNA clearance

Age (yrs) at recruitment
First 5 years
5–9 years
10–19 years
*1–4
8/23 (34.7%)
4/12 (33.3%)
2/16 (12.5%)
*5–9
5/29 (17.2%
3/11 (27.2%)
1/12 (8.3%)
10–14
1/9 (11.1%)
0/2 (0%)
0/4 (0%)
15–19
1/3 (33.3%)
0/0
0/0

*The p-values for the test of trend over time for the first five years after recruitment is < 0.01, < 0.01 and < 0.05 for HBsAg, HBeAg and HBV DNA respectively.

Mendy et al. Virology Journal 2008 5:49   doi:10.1186/1743-422X-5-49