Table 2 Study quality assessment using the Downs & Black tool
Studies Item | Tsang et al. [30] | Beebe et al. [31] | Chen et al. [32] | Chyu et al. [33] | Dechamps et al. [34] | Katkowski et al. [35] |
|---|---|---|---|---|---|---|
D&B: 1 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 2 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 3 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 4 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 5 | 0 | 0 | 0 | 0 | 0 | 0 |
D&B: 6 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 7 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 8 | 1 | 0 | 1 | 1 | 1 | 0 |
D&B: 9 | 1 | 0 | 0 | 1 | 1 | 0 |
D&B: 10 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 11 | 0 | 0 | 0 | 0 | 0 | 0 |
D&B: 12 | 0 | 0 | 0 | 0 | 0 | 0 |
D&B: 13 | 1 | 0 | 0 | 0 | 0 | 0 |
D&B: 14 | 1 | 0 | 0 | 0 | 1 | 0 |
D&B: 15 | 1 | 0 | 0 | 1 | 1 | 0 |
D&B: 16 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 17 | 1 | 0 | 1 | 1 | 1 | 0 |
D&B: 18 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 19 | 0 | 0 | 0 | 1 | 0 | 1 |
D&B: 20 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 21 | 1 | 0 | 1 | 1 | 1 | 1 |
D&B: 22 | 1 | 0 | 1 | 1 | 1 | 1 |
D&B: 23 | 1 | 1 | 1 | 1 | 1 | 1 |
D&B: 24 | 1 | 0 | 0 | 1 | 1 | 0 |
D&B: 25 | 0 | 0 | 0 | 0 | 1 | 0 |
D&B: 26 | 1 | 0 | 0 | 1 | 1 | 0 |
D&B: 27 | 0 | 0 | 3 | 0 | 0 | 1 |
Total | 21 | 11 | 18 | 20 | 21 | 15 |