5092 | Yang, 2020 | 1 | 13 | 3 | | not a RCT | high risk of bias |
5228 | Bean, 2020 | 1 | 19 | 3 | | not a RCT | high risk of bias |
5295 | Zhang, 2020 | 1 | 13 | 3 | | not a RCT | high risk of bias |
5331 | Li, 2020 | 1 | 13 | 4 | | not a RCT | high risk of bias |
5332 | Meng, 2020 | 1 | 13 | 4 | | not a RCT | high risk of bias |
5345 | Yan et al., 2020 | 1 | 20 | 4 | | not a RCT | high risk of bias |
5346 | Mancia, 2020 | 1 | 20 | 3 | | not a RCT | high risk of bias |
5347 | Mehra, 2020 | 2 | 12 | 4 | excluded | not a RCT | high risk of bias |
5348 | Reynolds (COVID positive patient), 2020 | 1 | 13 | 3 | | not a RCT | high risk of bias |
5349 | Reynolds (prophylaxis), 2020 | 1 | 13 | 3 | | not a RCT | high risk of bias |
5370 | Khera (outpatients), 2020 | 1 | 13 | 3 | | not a RCT | high risk of bias |
5372 | Khera (inpatients), 2020 | 1 | 13 | 3 | | not a RCT | high risk of bias |
5399 | Northwell Consortium (Richardson), 2020 | 0 | 99 | 0 | selection pending |
5440 | Morales, 2020 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
5604 | Schneeweiss, 0 | 0 | 13 | 0 | selection pending |
5605 | Vila-Corcole, 0 | 0 | 13 | 0 | selection pending |
5619 | Pan, 2020 | 0 | 13 | 0 | selection pending |
5797 | Rossi, 0 | 0 | 13 | 0 | selection pending |
5903 | Anzola, 2020 | 0 | 10 | 0 | selection pending |
6660 | Bae, 2021 | 0 | 12 | 0 | selection pending |
6729 | Shah, 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
6788 | Waissengrin, 2021 | 0 | 13 | 0 | selection pending |
6790 | Pawlowski, 2021 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
6894 | Andrejko, 2021 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
6927 | Rossman, 2021 | 0 | 13 | 0 | selection pending |
6931 | Yair, 2921 | 1 | 32 | 0 | | not a RCT | risk of bias not avaialble |
6934 | Boyarsky, 2021 | 1 | 32 | 0 | | not a RCT | risk of bias not avaialble |
6949 | Pawlowski, 2021 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
6981 | Public Health England (Harris), 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
7025 | Haberman, 2021 | 0 | 13 | 0 | selection pending |
7070 | PHE variants (Technical briefing 12 22 may 2021), 2021 | 2 | 20 | 2 | excluded | not a RCT | |
7325 | Skowronski, 2021 | 0 | 13 | 0 | selection pending |
7419 | Scotland delta (Sheikh), 2021 | 1 | 20 | 3 | | not a RCT | high risk of bias |
7420 | PHE (Stowe), 2021 | 2 | 13 | 3 | excluded | not a RCT | high risk of bias |
7950 | Harris, 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
8143 | Butt, 2021 | 1 | 20 | 2 | | not a RCT | |
8147 | Canada (Nasreen), 2021 | 1 | 20 | 2 | | not a RCT | |
8149 | PHE Technical briefing 16 (11/18 June 2021), 2021 | 2 | 13 | 3 | excluded | not a RCT | high risk of bias |
8150 | Ramasamy, 2021 | 0 | 32 | 0 | selection pending |
8164 | Public Health England, May 16, 2021 (Bernal), 2021 | 1 | 20 | 2 | | not a RCT | |
8255 | REACT-SCOT, 2021 | 1 | 20 | 0 | | not a RCT | risk of bias not avaialble |
8272 | Martinez-Baz, 2021 | 1 | 13 | 0 | | not a RCT | risk of bias not avaialble |
8274 | REACT-1 round 13 final report (Elliott, Imperial College London), 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
8275 | Musser, 2021 | 2 | 13 | 0 | excluded | not a RCT | risk of bias not avaialble |
8294 | CDC Mesa County, Colorado, 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
8313 | Bahl (Fully vaccinated vs unvaccinated), 2021 | 0 | 10 | 0 | selection pending |
8350 | Rosenberg, 2021 | 2 | 13 | 0 | excluded | not a RCT | risk of bias not avaialble |
8359 | Oxford (Pouwels), 2021 | 1 | 13 | 2 | | not a RCT | |
8360 | HEROES-RECOVER (Fowlkes), 2021 | 1 | 13 | 3 | | not a RCT | high risk of bias |
8513 | Grannis, 2021 | 1 | 20 | 3 | | not a RCT | high risk of bias |
8514 | VA (Bajema), 2021 | 1 | 20 | 3 | | not a RCT | high risk of bias |
8515 | Scobie, 2021 | 2 | 20 | 0 | excluded | not a RCT | risk of bias not avaialble |
9170 | UKHSA report 33 (23 december 2021), 2021 | 2 | 20 | 0 | excluded | not a RCT | risk of bias not avaialble |
9176 | UKHSA 31 december 2021, 2021 | 2 | 20 | 0 | excluded | not a RCT | risk of bias not avaialble |
9214 | Southern California (Lewnard), 2022 | 2 | 13 | 0 | excluded | not a RCT | risk of bias not avaialble |
9216 | Sultan, 2022 | 0 | 12 | 0 | selection pending |
9267 | Ostropolets, 2021 | 0 | 12 | 0 | selection pending |
9294 | UKHSA (report W4- 27 January), 2022 | 2 | 12 | 0 | excluded | not a RCT | risk of bias not avaialble |
9491 | Li X, 2022 | 1 | 12 | 0 | | not a RCT | risk of bias not avaialble |
9590 | UKHSA report week 12 (24 March 2022), 2022 | 1 | 12 | 0 | | not a RCT | risk of bias not avaialble |