Table 2.
Risk of Bias of NOS for Observational and Open-label Studies
| Selection | Comparability | Outcome | Total score | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Author | Representative of the exposed study |
Selection of the non-exposed cohort | Ascertainment of exposure |
Demonstration that outcome of interes was not present at start of study | Comparability of study on the basis of the design or analysis | Assessment of outcome | Was follow-up long enough for outcomes to occur | Adequacy of follow up cohorts |
|
| Carpenter et al. (2022) | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 7 |
| Chin et al. (2021) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Cross et al. (2019) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Doki et al. (2021) | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 7 |
| Miklos et al. (2017) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Waller et al. (2019) | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 7 |