Table 4: NOS Scores.
No. |
Author, year, country |
Selection (4 stars) |
Comparability (2 stars) |
Outcome/Exposure (3 stars) |
Total Score (9 stars) |
1 |
Cerri, et al. Italy [15] |
3 |
2 |
2 |
7 |
2 |
Gariballa & Alessa, UK [14] |
3 |
2 |
3 |
8 |
3 |
Martone, et al. Italy [4] |
4 |
2 |
2 |
8 |
4 |
Rossi, et al. Italy [16] |
3 |
2 |
2 |
7 |
5 |
Vetrano, et al, Italy [17] |
3 |
1 |
3 |
7 |
6 |
Yang, et al. China [18] |
3 |
2 |
3 |
8 |