Study | Q1 | Q2 | Q3 | Q4 | Q5 | Q6 | Q7 | Q8 | Q9 | Q10 | Q11 | Yes % | Risk of bias |
|---|
Wang et al. | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | Yes | 81% | Low |
- Q1. Were the two groups similar and recruited from the same population?
- Q2. Were the exposures measured similarly to assign people to both exposed and unexposed groups?
- Q3. Was the exposure measured in a valid and reliable way?
- Q4. Were confounding factors identified?
- Q5. Were strategies to deal with confounding factors stated?
- Q6. Were the groups/participants free of the outcome at the start of the study (or at the moment of exposure)?
- Q7. Were the outcomes measured in a valid and reliable way?
- Q8. Was the follow-up time reported and sufficient to be long enough for outcomes to occur?
- Q9. Was follow-up complete, and if not, were the reasons for loss to follow-up described and explored?
- Q10. Were strategies to address incomplete follow-up utilized?
- Q11. Was appropriate statistical analysis used?
