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. 2007 Feb;85(2):131–137. doi: 10.2471/BLT.06.033365

Table 3. Effect of age on HBsAg positivity among female OFWCs.

Relative risk for HBsAg + (95% CI)
Reference category by age
(years) 19–29 30–39 40–49 > 49
< 19 1.65
(1.23–2.22) 1.94
(1.44–2.61) 1.93
(1.42–2.63) 2.32
(1.39–3.86)
19–29 – 1.17
(1.06–1.30) 1.17
(1.03–1.33) 1.40
(0.92–2.15)
30–39 – – 1.00
(0.87–1.15) 1.20
(0.78–1.84)
40–49 – – – 1.20
(0.78–1.86)

HBsAg, hepatitis B surface antigen; OFWCs, overseas Filipino worker candidates.