Table 3

AMSTAR component score results for Kropmans et al 1999[27]

AMSTAR Question
YES
Can't Tell
No

1. Was an 'a priori' design provided?
X


2. Was there duplicate study selection and data extraction?
X


3. Was a comprehensive literature search performed?


X
4. Was the status of publication (i.e. grey literature) used as an inclusion criterion?

X

5. Was a list of studies (included and excluded) provided?

X

6. Were the characteristics of the included studies provided?


X
7. Was the scientific quality of the included studies assessed and documented?


X
8. Was the scientific quality of the included studies used appropriately in formulating conclusions?


X
9. Were the methods used to combine the findings of studies appropriate?


X
10. Was the likelihood of publication bias assessed?


X
11. Was the conflict of interest stated?


X

Bessa-Nogueira et al. BMC Oral Health 2008 8:27   doi:10.1186/1472-6831-8-27