Study | Methodological items | Total | |||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ||
Khan et al. (2013) | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 1 | 0 | 1 | 0 | 0 | 15 |
Shah et al. (2004) | 2 | 2 | 1 | 2 | 1 | 2 | 2 | 0 | 0 | 1 | 1 | 0 | 14 |
Nambiar et al. (2018) | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 1 | 0 | 1 | 1 | 0 | 16 |
Acharya et al. (2019) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 1 | 22 |
Mathur et al. (2020) | 2 | 2 | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 16 |
Deleanu et al. (2014) | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 20 |