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Table 2 Univariate and multivariate logistic regression models showing the association of HBV infection with 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

  Crude OR p-value Adjusted OR
(95% CI)
p-value
(95% CI)
Birth date
 Born before July 1986 1   1  
 Born after July 1986 0.05 (0.05–0.06) < 0.001 0.16 (0.13–0.19) < 0.001
Sex
 Women 1   1  
 Men 0.94 (0.90–0.98) 0.002 1.40 (1.34–1.47) < 0.001
Age (years)
 17–29 1   1  
 30–65 17.95 (17.02–18.92) < 0.001 1.66 (1.35–2.05) < 0.001
Blood type
 A 1   1  
 B 0.97 (0.91–1.02) 0.227 0.96 (0.91–1.02) 0.207
 O 1.01 (0.96–1.07) 0.621 1.02 (0.97–1.07) 0.526
 AB 0.97 (0.88–1.06) 0.503 0.97 (0.88–1.07) 0.582
BMI (kg/m2)
  ≤ 24 1   1  
  > 24 1.99 (1.91–2.08) < 0.001 1.08 (1.04–1.13) < 0.001
ALT (U/L) 1.01 (1.01–1.01) < 0.001 1.01 (1.01–1.01) < 0.001
Residential area
 Northern 1   1  
 North-Central 1.05 (0.98–1.12) 0.143 1.16 (1.08–1.24) < 0.001
 Central 1.02 (0.96–1.08) 0.471 1.28 (1.20–1.36) < 0.001
 Central-South 1.06 (0.99–1.13) 0.069 1.39 (1.30–1.48) < 0.001
 Southern 0.92 (0.86–0.98) 0.012 1.24 (1.16–1.33) < 0.001
 Eastern 1.03 (0.90–1.18) 0.667 1.41 (1.22–1.62) < 0.001
 Island 0.76 (0.55–1.05) 0.098 1.03 (0.74–1.43) 0.865
Occupation
 Service worker 1   1  
 Student 0.06 (0.05–0.06) < 0.001 0.29 (0.26–0.33) < 0.001
 Military/civil servant/teacher 0.25 (0.23–0.27) < 0.001 0.69 (0.63–0.75) < 0.001
 Laborer/farmer and fisherman 1.43 (1.35–1.53) < 0.001 1.03 (0.96–1.10) 0.447
 Business/technician/specialist 1.01 (0.93–1.09) 0.810 0.76 (0.71–0.83) < 0.001
 Others (including housekeepers) 1.07 (1.01–1.14) 0.027 0.93 (0.88–0.99) 0.027