Table 2 The quality assessment criteria
Domain | Criteria |
|---|---|
Sample | 1- Source of the sample were clearly defined |
2- Enough description of the sample | |
Prognostic variables | 3- Clear definition and description of the used prognostic factor |
4- Measured appropriately (reliable and valid) | |
Follow-up | 5- Completeness rate (>80%) |
6- Adequate description of the completeness | |
Outcome | 7- Clear definition and description of the used outcomes |
8- Measured appropriately (reliable and valid) | |
Analysis | 9- Enough description of the analysis |
10- Appropriate analysis | |
Confounding | 11- Account for potential confounders with appropriate analysis |