Table 1.
Demographics of the included studies
| First author | Country | Number of patients | Male patients n (%) | Age* | VV ECMO | P/F ratio* |
|---|---|---|---|---|---|---|
| Alnababteh | USA | 13 | 8 (61.5) | 44.54 ± 9.49 | 13 | 97.96 ± 49.87 |
| Akhtar | UK | 18 | 16 (88.9) | 47.3 ± 0.9 | 18 | NR |
| Barbaro | International | 1035 | 764 (73.8) | 49 (41–57) | 978 | 72 (59–94) |
| Charlton | UK | 34 | 27 (79.4) | 46.3 ± 7.5 | 34 | 64.5 (54.7–74.3) |
| Cousin | France | 30 | 24 (80) | 33.33 ± 7.00 | 30 | 69 ± 9.34 |
| Falcoz | France | 17 | 16 (94.1) | 56 [30–76] | 16 | 71 [52–134] |
| Guihaire | France | 24 | 20 (83.3) | 48.8 ± 8.9 | 24 | 67 [52–78] |
| Huette | France | 12 | 12 (100) | 62 (58–64) | 14 | 76 (66–83) |
| Jackel | Germany | 15 | 11 (73.3) | 60.8 (54.2–67) | 15 | 63.7 (51.9–94.5) |
| Jang | Korea | 19 | 15 (79) | 63 ± 4.81 | 16 | 97.7 ± 61.11 |
| Le Breton | France | 13 | 10 (77) | 49.31 ± 7.75 | 13 | 60.62 ± 15.23 |
| Jozwiak | France | 11 | 7 (63.6) | 50 (38–59) | 11 | 68 (58–89) |
| Masur | USA | 12 | 8 (66.7) | 53.83 ± 13.18 | NR | NR |
| Mustafa | USA | 40 | 30 (75) | 48.4 ± 1.5 | 40 | 68.9 ± 3.1 |
| Roedl | Germany | 20 | NR | NR | 20 | NR |
| Schmidt | France | 83 | 61 (73.5) | 48.0 ± 11.0 | 81 | 62 ± 18 |
| Shih | USA | 37 | 27 (73.0) | 51 (40–59) | 37 | 95 (73–147) |
| Takeda | Japan | 237 | 196 (82.7) | NR | 230 | NR |
| Yang | China | 21 | 12 (57.1) | 58.5 (42.75–67.25) | 21 | 60 (55.6–72) |
| Zayat | Germany | 17 | 11 (64.7) | 57 (53–62) | 17 | NR |
| Zeng | China | 12 | 11 (91.7) | 50.9 ± 13.5 | NR | NR |
| Zhang | UK | 43 | 33 (76.7) | 46 (35.5–52.5) | 43 | 67.5 (58.9–77.8) |
VV ECMO, venovenous extracorporeal membrane oxygenation; P/F, partial pressure of arterial oxygen to fraction of inspired oxygen ratio [PaO2/FiO2]; NR, not reported
*Age and P/F ratio reported as mean ± SD, median (interquartile range) or median [range]