AMSTAR Question | YES | Can't Tell | No |
---|---|---|---|
1. Was an 'a priori' design provided? | X | Â | Â |
2. Was there duplicate study selection and data extraction? | X | Â | Â |
3. Was a comprehensive literature search performed? | Â | Â | X |
4. Was the status of publication (i.e. grey literature) used as an inclusion criterion? | Â | X | Â |
5. Was a list of studies (included and excluded) provided? | Â | X | Â |
6. Were the characteristics of the included studies provided? | Â | Â | X |
7. Was the scientific quality of the included studies assessed and documented? | Â | Â | X |
8. Was the scientific quality of the included studies used appropriately in formulating conclusions? | Â | Â | X |
9. Were the methods used to combine the findings of studies appropriate? | Â | Â | X |
10. Was the likelihood of publication bias assessed? | Â | Â | X |
11. Was the conflict of interest stated? | Â | Â | X |