Table 2.
Assessment of bias risks of the included publications.
| SELECTION | COMPARABILITY | Outcome | ||||||
|---|---|---|---|---|---|---|---|---|
| 1) Representativeness of the exposed cohort | 2) Selection of the non-exposed 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 | |
| Li 2016[11] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Wu 2019[12] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Wu 2021 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Rayner 2019[9] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Eskin 2019[17] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Mendy 2019[18] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Chen 2017[10] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |