Table 2.
Univariate and multivariate logistic regression analysis of factors involved in COVID-19 positivity in HCWs
| Univariate analysis OR (95% CI) |
Multivariate analysis OR (95% CI) |
|
|---|---|---|
| Age | 0.98 (0.99–0.99) | 0.98 (0.96–1.01) |
| Men versus women | 1.14 (0.75–1.7) | 1.69 (0.9–3.2) |
| Occupation | ||
| Physician | 1 | |
| Residenta | 1.36 (0.78–2.69) | |
| Nurse | 1.12 (0.75–1.69) | |
| Nurse aid | 1.39 (0.83–2.35) | |
| Otherb | 1.01 (0.6–2.00) | |
| Wards | ||
| Low risk: surgical and medical wards | 1 | 1 |
| Medium risk: Internal Medicine I and II | 4.6 (2.9–7.2) | 1.88 (0.97–3.6) |
| High risk: Infectious Diseases, Geriatric and Emergency Medicine | 30.8 (17.0–53.2) | 13.4 (5.8–31.0) |
| Contacts | ||
| With patients | 1 | 1 |
| With HCWs | 0.62 (0.4–0.96) | 1.39 (0.64–3.0) |
| With both | 5.13 (3.1–8.6) | 2.23 (1.01–4.9) |
| Contact with contact or causal contacts | 0.61 (0.03–0.13) | 1.40 (0.28–6.9) |
| Use of PPE | 2.9 (1.63–5.1) | 3.7 (1.6–8.2) |
| Use of N95 mask | 7.8 (4.0–15.2) | |
| Comorbidity | 0.88 (0.31–2.51) | |
| Symptoms | 37.3 (23.8–58.5) | 5.4 (2.9–10.0) |
| Lower respiratory symptoms | 9.7 (1.26–74.9) | |
| Fever >37.5°C | 2.03 (1.26–74.9) | |
| Cough | 0.76 (0.46–1.2) | |
| Loss of smell and taste | 9.7 (4.2–22.1) | |
| Diarrhoea | (0.18–0.83) |
Significant associations are highlighted in bold.
aPhysician during postgraduate course.
bTechnicians and clerks.