Table 2 The methodological quality of the included papers
SN | Author(s) | Year | Score | Range |
|---|---|---|---|---|
1 | Ayitey et al. | 2013 | 69 | Average Quality |
2 | Alatinga & Williams | 2015 | 65 | Average Quality |
3 | Baozhen et al. | 2019 | 50 | Low Quality |
4 | Duku et al. | 2015 | 74 | Average Quality |
5 | Kotoh et al. | 2018 | 65 | Average Quality |
6 | Parmar et al. | 2014 | 77 | High Quality |
7 | Salari et al. | 2019 | 87 | High Quality |
8 | Van der Wielen et al. | 2018a | 88 | High Quality |
9 | Van der Wielen et al. | 2018b | 87 | High Quality |
10 | Van der Wielen et al. | 2018c | 86 | High Quality |