Table 1.
Characteristics between COVID-19 and non-COVID-19 patients in the included studies.
| Study | Country | Study Design | COVID-19 Status | Number of Patients | Age, Years (Mean ± SD) |
Sex (Male), No./Total (%) | Bystander Witnessed No./Total (%) |
Bystander CPR No./Total (%) |
Shockable Initial Rhythm No./Total (%) |
Time from Call to Arrival (Mean ± SD) |
Survival to Discharge No./Total (%) |
NOS Score |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Baert et al. 2020 [20] | France | Multi-centre retrospective study |
COVID-19 | 197 | 67 ± 18 | 117/197 (59.4) | 126/197 (64.0) | 99/197 (50.3) | 8/197 (4.1) | 25 ± 22 | 0/192 (0.0) | Fair |
| Non-COVID-19 | 808 | 69 ± 16 | 559/808 (69.2) | 522/808 (64.6) | 401/808 (49.6) | 79/806 (9.8) | 23 ± 17 | 26/745 (3.5) | ||||
| Baldi et al. 2020 [21] | Italy | Single-centre retrospective study |
COVID-19 | 125 | 77 ± 2.3 | 83/125 (66.4) | 25/125 (20) | 13/125 (9.6) | 8/125 (9.1) | 16.6 ± 1.7 | 2/125 (2.3) | Fair |
| Non-COVID-19 | 365 | 76.8 ± 2.8 | 238/365 (65.2) | 33/365 (9.0) | 76/365 (39.2) | 28/365 (12.4) | 14.5 ± 1.3 | 14/365 (6.2) | ||||
| Cho et al. 2020 [22] | Republic of Korea | Multi-centre retrospective study |
COVID-19 | 10 | 73.3 ± 4.3 | 4/10 (40.0) | 10/10 (100) | 1/10 (10.0) | 0/10 (0) | 24.5 ± 4.6 | 0/10 (0) | Good |
| Non-COVID-19 | 161 | 72.3 ± 3.2 | 104/161 (64.6) | 120/161 (74.5) | 57/161 (35.4) | 15/161 (9.3) | 19.5 ± 1.7 | 8/161 (5.0) | ||||
| Fothergill et al. 2021 [23] | UK | Single-centre retrospective study |
COVID-19 | 766 | 70 ± 18 | 468 (61.2) | 216/393 (55.0) | 257/393 (65.4) | 24/393 (6.2) | 11 ± 1.8 | 4/764 (0.5) | Good |
| Non-COVID-19 | 2356 | 71 ± 19 | 1371 (58.3) | 390/742 (52.6) | 461/742 (62.1) | 144/742 (19.5) | 9.7 ± 1.3 | 45/2331 (1.9) | ||||
| Sultanian et al. 2021 [24] | Sweden | Observational registry-based study | COVID-19 | 88 | 66.5 ± 18.4 | 59 (67.0) | 37 (42.0) | 48 (54.5) | 6 (6.8) | 11.8 ± 2.2 | 0 (0.0) | Good |
| Non-COVID-19 | 334 | 70.6 ± 16.4 | 241 (72.2) | 158 (47.3) | 188 (56.3) | 63 (18.9) | 13 ± 2.3 | 9 (2.7) |
Legend: CPR = Cardiopulmonary resuscitation; NS = Not specified; OHCA = out-of-hospital cardiac arrest; SD = Standard deviation; NOS = Newcastle-Ottawa Scale.