Table 2. Estimated relative risk of death after SARS-CoV-2 infection, Lombardy, Italy, SARS-CoV-2-positive contacts, Lombardy, Italy, February–April 2020 (n = 2,824).
| SARS-CoV-2-positive | Deaths | RR (95% CI) | |
|---|---|---|---|
| Age (years) | |||
| ≥ 80 | 158 | 29 | Reference |
| 0–59 | 1,837 | 3 | 0.03 (0.01–0.1) |
| 60–69 | 494 | 7 | 0.14 (0.05–0.32) |
| 70–79 | 335 | 23 | 0.5 (0.27–0.89) |
| Sex | |||
| Female | 1,604 | 29 | Reference |
| Male | 1,220 | 33 | 1.81 (1.03–3.16) |
| Comorbidity | |||
| None | 113 | 1 | Reference |
| Cardiovascular | 316 | 51 | 5.64 (1.17–55.27) |
| Other comorbidity | 60 | 1 | 0.93 (0.04–20.55) |
| Unknown | 2,335 | 9 | 0.36 (0.06–6.42) |
| Epidemic period | |||
| Before 16 March 2020 | 1,423 | 42 | Reference |
| After 16 March 2020 | 1,358 | 18 | 0.38 (0.2–0.69) |
| Unknown | 43 | 2 | 3.09 (0.43–10.94) |
CI: confidence interval; RR: relative risk of death after infection; SARS-CoV-2: severe acute respiratory syndrome coronavirus 2.
We used a generalised linear model where the fatal outcome is used as the response variable and sex, age group, comorbidities and epidemic period are considered as regressors.