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