Table 2.
Quality assessment of the included studies
| Selection | Comparability | Exposure | Total point | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Author (year) | (1) Representativeness of the exposed cohort | (2) Selection of the nonexposed cohort | (3) Ascertainment of exposure | (4) Demonstration that outcome of interest was not present at start of study | (1) Comparability of cohorts on the basis of the design or analysis | (1) Assessment of outcome | (2) Was follow-up long enough for outcomes to occur | (3) Adequacy of follow-up of cohorts | |
| Guidera (2013) [14] | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 7 |
| Kerawala (2021) [23] | 0 | 1 | 1 | 0 | 2 | 1 | 1 | 1 | 7 |
| Stramiello (2021) [24] | 0 | 1 | 1 | 1 | 2 | 1 | 1 | NA | 7 |
| Le (2022) [25] | 1 | 1 | 1 | 0 | 2 | 1 | 1 | 1 | 8 |
| Wu (2022) [26] | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 9 |