Table 1.
Summary of included publications describing QPIs and Oxford rating for each publication
| Author | Year | Study design | Oxford rating | Site of research |
|---|---|---|---|---|
| Walters [21] | 2014 | Retrospective cohort Study | 3 | USA |
| Schlick [15] | 2020 | Retrospective review | 3 | USA |
| Adhia [9] | 2020 | Retrospective review | 3 | Europe |
| Samson [1] | 2017 | Retrospective review | 3 | USA |
| Burton [2] | 2016 | Prospective review | 3 | Australia |
| Staiger [22] | 2018 | Literature review | 5 | Switzerland |
| Low [37] | 2019 | Prospective review | 3 | Multinational contribution |
| Low [38] | 2007 | Prospective review | 3 | USA |
| Merkow [14] | 2012 | Retrospective review | 3 | USA |
| Carroll [18] | 2020 | Prospective review | 3 | Canada |
| Talsma [23] | Retrospective cohort study | 3 | Lebanon | |
| Kalff [16] | 2021 | Consensus | 5 | Netherlands |
| Kulshrestha [27] | 2020 | Retrospective review | 3 | USA |
| Bolger [30] | 2021 | Retrospective review | 3 | Ireland |
| In [25] | 2016 | Retrospective review | 3 | USA |
| Schmidt [26] | 2017 | Prospective review | 3 | Switzerland |
| Busweiler [39] | Feb 2017 | Retrospective review | 3 | Netherlands |
| Busweiler [19] | July 2017 | Retrospective review | 3 | Netherlands |
| Valsangkar [40] | 2018 | Retrospective review | 3 | USA |
| Traverso [41] | 2004 | Prospective review | 3 | USA |
| Helminen [17] | 2017 | Prospective review | 3 | Finland |
| Markar [31] | 2014 | Prospective review | 3 | USA |
| Khoushal [42] | 2016 | Retrospective review | 3 | USA |
| Allum [43] | 2018 | Guidelines | 5 | Sweden |
The site listed-USA; United States of America