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Table 6 Multivariable analysis of the risk factors associated with anti-HEV IgG in Zhangqiu county and Rushan county, Shandong province, China

From: Comparison of hepatitis E virus seroprevalence between HBsAg-positive population and healthy controls in Shandong province, China

  Zhangqiu Rushan
Participant number P OR (95% CI) Participant number P OR (95% CI)
Gender
 Male 1049 Ref. Ref. 1041 Ref. Ref.
 Female 1006 0.05 0.72 (0.52,0.98) 1006 < 0.001 0.71 (0.58,0.86)
Age (yrs)
 Under 30 97 Ref. Ref. 138 Ref. Ref.
 30–39 331 0.54 0.71 (0.24,2.10) 158 < 0.001 3.38 (1.87,6.11)
 40–49 559 0.46 1.45 (0.54,3.88) 479 < 0.001 4.64 (2.74,7.86)
 50–59 460 0.41 1.53 (0.56,4.17) 667 < 0.001 4.17 (2.49,6.99)
 60–69 396 0.02 3.22 (1.18,8.73) 433 < 0.001 5.47 (3.20,9.35)
 Above 70 212 < 0.001 8.62 (3.08,24.15) 172 < 0.001 4.49 (2.45,8.22)
Education attainment
 Illiteracy 227 Ref. Ref. 115 Ref. Ref.
 Primary school 739 0.246 1.32 (0.83,2.09) 560 0.025 1.66 (1.06,2.60)
 Junior middle school 972 0.676 1.12 (0.64,1.96) 1121 0.037 1.63 (1.03,2.58)
 Senior middle school and above 117 0.715 1.18 (0.48,2.92) 251 0.033 1.76 (1.04,2.96)
Occupation about swine laughter or selling
 Yes 11 Ref. Ref. 61 Ref. Ref.
 No 2044 0.122 0.29 (0.06,1.39) 1986 0.654 1.13 (0.66,1.93)
Occupation about seafood cultivation, processing or selling
 Yes 0 43 Ref. Ref.
 No 2055 2004 0.103 0.59 (0.31,1.11)
Wash hands before dining
2 times per day 2015 Ref. Ref. 1877 Ref. Ref.
one time per day 40 0.506 0.61 (0.14,2.63) 170 0.984 1.00 (0.72,1.39)
Drinking unboiled water
3 times per week 51 Ref. Ref. 143 Ref. Ref.
 1–2 times per week 417 0.637 1.32 (0.42, 4.12) 214 0.12 0.69 (0.44,1.09)
 Less than once per week 1587 0.673 1.27 (0.42, 3.87) 1690 0.6 0.91 (0.63,1.31)
Eating outside
3 times per week 94 Ref. Ref. 98 Ref. Ref.
 1–2 times per week 611 0.926 1.04 (0.47,2.29) 140 0.924 0.97 (0.55,1.72)
 Less than once per week 1350 0.644 0.83 (0.38,1.81) 1809 0.34 1.25 (0.79,1.96)
Chronic hepatitis B infection
 Yes 1026 Ref. Ref. 1022 Ref. Ref.
 No 1029 0.187 1.23 (0.90,1.68) 1025 0.609 1.05 (0.87,1.26)