Table 1.
Quality assessment of the observational studies included in the meta-analysis (The NOS tool).
| Author | Selection | Comparability | Outcome | Total Quality Score | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Representativeness of Exposed Cohort | Selection of Non-Exposed Cohort | Ascertainment of Exposure | Demonstration That Outcome of Interest Was Not Present at the Start of the Study | Adjust for the Most Important Risk Factors | Adjust for Other Risk Factors | Assessment of Outcome | Follow-Up Length | Loss to Follow-Up Rate | ||
| Hummel et al. [17] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Hupmann et al. [18] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Rousseau et al. [10] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Corsenac et al. [9] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Corsenac et al. [19] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
NOS: The Newcastle-Ottawa Scale.