Table 3.
Clinical outcomes of individuals with SARS-CoV-2 infection in the Montefiore Health System during the first and second wave of the pandemic.
| First Wave n = 8,759 | Second Wave n = 3,900 | Second wave vs first wave |
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|---|---|---|---|---|---|---|---|---|
| Clinical outcomes | Absolute risk, n (%) | Risk ratio | 99·5% CI | Risk difference, % | 99·5% CI | Odds Ratiob | 99·5% CI | |
| ED visits | 6,689 (76·37) | 2,878 (73·79) | 0·97 | 0·94 to 1·00 | -2·53 | -4·89 to -0·18 | 1·09 | 0·96 to 1·25 |
| Hospitalization | 5,060 (57·77) | 1,707 (43·77) | 0·76 | 0·72 to 0·80 | -14·00 | -16·68 to -11·32 | 0·65 | 0·58 to 0·74 |
| Intensive care | 785 (8·96) | 281 (7·21) | 0·80 | 0·67 to 0·97 | -1·76 | -3·20 to -0·31 | 0·85 | 0·69 to 1·04 |
| Invasive mechanical ventilation | 714 (8·15) | 207 (5·31) | 0·65 | 0·53 to 0·81 | -2·84 | -4·14 to -1·54 | 0·70 | 0·56 to 0·89 |
| Length of stay > 6 daysa | 2,406 (47·55) | 532 (31·17) | 0·66 | 0·59 to 0·73 | -16·38 | -20·10 to -12·67 | 0·71 | 0·60 to 0·85 |
| Acute kidney injury | 2,769 (31·61) | 793 (20·41) | 0·64 | 0·58 to 0·71 | -11·28 | -13·56 to -9·00 | 0·62 | 0·54 to 0·71 |
| Overall mortality | 1,302 (14·86) | 144 (3·69) | 0·25 | 0·20 to 0·32 | -11·17 | -12·54 to -9·81 | 0·22 | 0·17 to 0·28 |
| In-hospital mortalitya | 1,219 (24·09) | 128 (7·50) | 0·31 | 0·24 to 0·40 | -16·59 | -19·05 to -14·13 | 0·23 | 0·17 to 0·30 |
a
Among hospitalized patients
b
Age-adjusted odds ratio