Table 3.
Association between COVID-19 vaccination and mortality in multivariate analysis.
| After 28 Days | After 90 Days | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Characteristics | HR | 95% CI | aHR * | 95% CI | HR | 95% CI | aHR * | 95% CI | |
| Vaccinated | |||||||||
| Unvaccinated | Ref. | Ref. | Ref. | Ref. | |||||
| At least one dose | 0.51 | 0.31–0.84 | 0.42 | 0.25–0.70 | 0.58 | 0.37–0.92 | 0.47 | 0.30–0.75 | |
| Age (years) | 1.03 | 1.03–1.04 | 1.03 | 1.03–1.04 | 1.04 | 1.03–1.04 | 1.03 | 1.03–1.04 | |
| Sex | |||||||||
| Female | Ref. | Ref. | |||||||
| Male | 1.49 | 1.25–1.78 | 1.47 | 1.24–1.74 | |||||
| Symptoms at the onset of the disease | |||||||||
| Dyspnea (yes) | 3.38 | 2.79–4.10 | 3.33 | 2.76–4.03 | |||||
| Fever (yes) | 1.26 | 1.07–1.49 | 1.24 | 1.06–1.47 | |||||
| Cough (yes) | 0.56 | 0.47–0.66 | 0.56 | 0.47–0.66 | |||||
| Comorbidity | |||||||||
| Hypertension (yes) | 3.74 | 2.95–4.75 | 3.68 | 2.90–4.67 | |||||
| Type 2 diabetes (yes) | 3.03 | 1.98–4.64 | 2.97 | 1.94–4.55 | |||||
| Chronic kidney disease (yes) | 2.51 | 1.47–4.26 | 2.65 | 1.59–4.42 | |||||
| Obesity (yes) | 3.80 | 2.61–5.53 | 3.74 | 2.57–5.44 | |||||
| Cancer (yes) | 1.06 | 0.62–1.80 | 1.17 | 0.71–1.92 | |||||
| Neurological (yes) | 3.71 | 2.42–5.69 | 3.66 | 2.39–5.61 | |||||
* Adjusted for age, sex, dyspnea, fever, cough, hypertension, type 2 diabetes, chronic kidney disease, obesity, cancer, and neurological disorder. HR: hazard ratio; aHR: adjusted hazard ratio; 95% CI: 95% confidence interval.