| Boehmer et al. 2021 |
Retrospective (Premier Healthcare Database Special COVID-19 Release) |
USA |
1,452,773 |
2116 (0.146) |
RR 15.7; 95% CI 14.1–17.2) |
| Buckley et al. 2021 |
Retrospective (Global federated health research network) |
International |
718,365 |
35,820 (5.0) |
RR, 18.28; 95% CI, 3.95 to 25.12 |
| Barda et al. 2021 |
Retrospective (Clalit Health Services) |
Israel |
173,106 |
19 (0.01) |
NA |
| Annie et al. 2021 |
Retrospective (TriNetX platform) |
USA |
259,352 |
383 (0.2) |
NA |
| Murk et al. 2021 |
Retrospective (Health Verity's Marketplace data set) |
USA |
70,288 |
70 (0.1) |
OR 8.17; 95% CI 3.58-18.62 |
| Linschoten et al. 2020 |
Registry |
International |
3011 |
3 (0.1) |
NA |
| Jalali et al. 2021 |
Retrospective (Single Center) |
Iran |
196 |
15 (7.7) |
NA |
| Sang III et al. |
Autopsy |
USA |
50 |
2 (4) |
NA |
| Kunal et al. 2020 |
Single Center Retrospective |
India |
108 |
3 (2.8) |
NA |
| Bhatia et al. 2021 |
Registry |
Australia |
644 |
2 (0.31) |
NA |
| Daniels et al. 2021 |
Registry (US Universities, Athletes only) |
USA |
1597 |
37 (2.3) |
NA |
