Table 3.
Binary logistic regression analysis of risk factors for the confirmed seroprevalence among blood donors in Wuhan.
| Confirmed donor no. (seroprevalence %) | OR (95%CI) | p value | Adjusted OR (95%CI) | p value | |
|---|---|---|---|---|---|
| Sex | |||||
| Male | 191 (1.7) | 1.0 | 1.0 | – | |
| Female | 204 (3.0) | 1.8 (1.5–2.2) | <0.000001 | 1.8 (1.5–2.2) | <0.000001 |
| Age | 0.0006 | 0.0005 | |||
| Median (IQR) | 34 (28–43) | ||||
| 18–25 | 72 (1.9) | 1.0 | – | 1.0 | – |
| 26–35 | 139 (2.0) | 1.1 (0.8–1.4) | 0.562 | 1.1 (0.9–1.5) | 0.392 |
| 36–45 | 109 (2.4) | 1.3 (1.0–1.8) | 0.089 | 1.4 (1.0–1.8) | 0.048 |
| 46–55 | 67 (2.9) | 1.6 (1.2–2.2) | 0.008 | 1.6 (1.2–2.3) | 0.005 |
| >55 | 8 (6.9) | 3.9 (1.8–8.4) | 0.0004 | 4.1 (1.9–8.8) | 0.0003 |
| ABO blood type | 0.120 | ||||
| A | 148 (2.6) | 1.0 | – | ||
| B | 97 (2.2) | 0.8 (0.6–1.1) | 0.152 | ||
| O | 112 (1.9) | 0.7 (0.6–0.9) | 0.007 | ||
| AB | 38 (2.3) | 0.9 (0.6–1.2) | 0.429 | ||
| Missing data | 0 (0) | – | 0.998 | ||
| Rh(D) blood type | 0.725 | ||||
| + | 390 (2.2) | 1.0 | – | ||
| − | 5 (3.2) | 1.4 (0.6–3.5) | 0.423 | ||
| Missing data | 0 (0) | – | 0.998 | ||
| Ethnicity | 0.861 | ||||
| Han | 382 (2.2) | 1.0 | – | ||
| Non-Han | 10 (1.9) | 0.8 (0.4–1.6) | 0.585 | ||
| Missing data | 3 (2.2) | 1.0 (0.3–3.1) | 0.995 | ||
| Occupation | 0.443 | ||||
| Healthcare worker | 7 (1.6) | 1.0 | – | ||
| Civil worker | 8 (2.2) | 1.4 (0.5–3.9) | 0.513 | ||
| Teacher | 19 (3.9) | 2.5 (1.0–6.0) | 0.042 | ||
| Student | 30 (2.1) | 1.4 (0.6–3.0) | 0.542 | ||
| Office worker | 93 (2.0) | 1.3 (0.6–2.8) | 0.536 | ||
| Worker | 34 (2.0) | 1.3 (0.5–2.8) | 0.611 | ||
| Military personnel | 2 (2.0) | 1.2 (0.3–6.1) | 0.787 | ||
| Farmer | 9 (2.5) | 1.6 (0.6–4.4) | 0.349 | ||
| Others | 163 (2.4) | 1.5 (0.7–3.2) | 0.311 | ||
| Missing data | 30 (2.2) | 1.4 (0.6–3.2) | 0.442 | ||
| Education level | 0.582 | ||||
| Master/doctorate | 15 (1.5) | 1.0 | – | ||
| Bachelor | 113 (2.1) | 1.4 (0.8–2.4) | 0.247 | ||
| College | 109 (2.3) | 1.5 (0.9–2.6) | 0.156 | ||
| High school | 71 (2.4) | 1.6 (0.9–2.7) | 0.126 | ||
| Lower than high school | 38 (2.6) | 1.7 (0.9–3.1) | 0.082 | ||
| Missing data | 49 (2.1) | 1.4 (0.8–2.5) | 0.271 | ||
The association between demographic characteristic and specific antibodies against SARS-CoV-2 were estimated by univariate and multivariate logistic regression.
OR odds ratio.