| Study | Reason for exclusion |
|---|---|
| Ali 2015 | Study population had range of wounds |
| Andrianasolo 2018 | Not an RCT |
| Baek 2020 | NPWT was not the only systematic difference between groups: the trial applied NPWT in both comparison groups |
| Braakenburg 2006 | Study population had range of wounds ‐ authors contacted to try and obtain pressure ulcer data |
| Chen 2018 | NPWT was not the only systematic difference between groups: the trial applied NPWT in both comparison groups |
| Ciliberti 2016 | NPWT was not the only systematic difference between groups: the trial applied NPWT in both comparison groups |
| Dwivedi 2020 | Non‐randomised study |
| Gao 2015 | NPWT was not the only systematic difference between groups: the trial applied NPWT in both comparison groups |
| Greer 1999 | Unable to locate an abstract or full‐text publication |
| Hampton 2015 | Not an RCT |
| Hu 2009 | Study population had range of wounds ‐ based on translation |
| Joseph 2000 | Study population had range of wounds ‐ authors contacted to try and obtain pressure ulcer data |
| Kumar 2021 | Not an RCT |
| Leonardi 2017 | Not an RCT |
| Liu 2021 | NPWT was not the only systematic difference between groups: the trial applied NPWT in both comparison groups |
| Mari 2019 | NPWT was not the only systematic difference between groups: the trial applied NPWT in both comparison groups |
| McCallon 2015 | Not an RCT |
| Mody 2008 | Study population had range of wound wounds ‐ authors contacted to try and obtain pressure ulcer data. 11/48 wounds were pressure ulcers, but it seems that only 2 were in the NPWT group |
| Mohammed 2020 | NPWT was not the only systematic difference between groups: the trial applied NPWT in both comparison groups |
| Moues 2007 | Not corrected study population. Confirmed by study author |
| Mullner 1997 | Not an RCT |
| Papp 2018 | not RCT |
| Schwarz 2012 | Study population had range of wound ‐ authors contacted to try and obtain pressure ulcer data |
| Srivastava 2016 | Not an RCT |
| Tauro 2007 | Not an RCT |
| Wagstaff 2014 | NPWT was not the only systematic difference between groups: the trial applied NPWT in both comparison groups |
| Wild 2008 | No relevant outcome data reported ‐ authors contacted. RCT contained 10 participants in total |
| Zhang 2012 | NPWT was not the only systematic difference between groups: the trial applied NPWT in both comparison groups |
Abbreviations
NPWT: negative pressure wound therapy; RCT: randomised controlled trial