Table 3.
Independent risk factors for the development of at least moderate COVID-19 infection.
| Risk factors | Cases (with moderate infection) (N = 116) | Controls (without infection) (N = 1,898) | Crude ORs (95% CI) | Final adjusted OR* (95% CI) |
|---|---|---|---|---|
| Male gender (N; %) | 61 (52.3) | 691 (36.4) | 1.94 (1.33–2.82) | 1.12 (0.66–1.87) |
| Age > 11-year-old (N; %) | 45 (38.8) | 1,673 (88.8) | 0.34 (0.24– 0.51) | 0.34 (0.14–0.77) |
| Obesity (N; %) | 18 (15.5) | 252 (13.3) | 1.36 (0.81–2.31) | – |
| Comorbidities (N; %) | 17 (14.7) | 55 (2.9) | 3.93 (2.37–6.54) | 3.07 (1.53–6.18) |
| Household infections (N; %) | 55 (47.4) | 375 (19.8) | 3.64 (2.23–5.94) | 1.87 (0.97–3.53) |
| Vaccinated (N; %) | 52 (44.8) | 1,668 (87.8) | 0.10 (0.07–0.15) | 0.41 (0.18–0.95) |
O, odds ratios; CI, confidence interval.
*
Final adjustment model: adjusted for the male gender, age >11 years old, household infection, and vaccination after omitting children under 5 years of age.