| No. | Study | Sample Size | Region | Outcome Measure |
| 1 | Barasa E. et al. (2018) [1] | Not Reported | Kenya | Health service delivery |
| 2 | Brown A. (2019) [4] | 8 | Australia | Hospital performance |
| 3 | Brown A. et al. (2018) [5] | Not Reported | Not Reported | Hospital performance |
| 4 | Jones et al. (2016) [6] | 15 | England | Hospital performance |
| 5 | Karumba K. (2020) [7] | Not Reported | Kenya | Hospital performance |
| 6 | Leggat S, Balding. (2017) [8] | Not Reported | Australia | Hospital performance |
| 7 | Marques et al. (2020) [9] | Not Reported | Not Reported | Health service delivery |
| 8 | Subramanian S. (2018) [10] | Not Reported | India | Hospital performance |
| 9 | Wambui S et al. (2020) [3] | Not Reported | Kenya | Health service delivery |
| 10 | Zuva J. (2018) [11] | 116 | Turkey | Hospital performance |