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Table 4 Odds ratios for HBV infection based on the combination of sex and birth date

From: Risk of HBV infection among male and female first-time blood donors born before and after the July 1986 HBV vaccination program in Taiwan

  OR (95% CI) p-value
Birth date and sex
 Born before July 1986, women 1  
 Born before July 1986, men 1.44 (1.37–1.52) < 0.001
 Born after July 1986, women 0.17 (0.14–0.22) < 0.001
 Born after July 1986, men 0.21 (0.17–0.26) < 0.001
Age
 17–29 1  
 30–65 1.65 (1.34–2.04) < 0.001
Blood type
 A 1  
 B 0.96 (0.91–1.02) 0.206
 O 1.02 (0.97–1.07) 0.527
 AB 0.97 (0.88–1.07) 0.580
BMI
  ≤ 24 kg/m2 1  
  > 24 kg/m2 1.08 (1.03–1.13) 0.001
ALT (U/L) 1.01 (1.01–1.01) < 0.001
Residential area
 Northern 1  
 North-Central 1.16 (1.08–1.24) < 0.001
 Central 1.28 (1.21–1.36) < 0.001
 Central-South 1.39 (1.30–1.49) < 0.001
 Southern 1.25 (1.16–1.33) < 0.001
 Eastern 1.41 (1.22–1.61) < 0.001
 Island 1.03 (0.74–1.43) 0.872
Occupation
 Service worker 1  
 Student 0.29 (0.26–0.32) < 0.001
 Military/civil servant/teacher 0.70 (0.64–0.77) < 0.001
 Laborer/farmer and fisherman 1.02 (0.96–1.09) 0.505
 Business/technician/specialist 0.76 (0.71–0.83) < 0.001
 Others (including housekeepers) 0.94 (0.88–0.99) 0.044