Table 3 CASP questions to assess the quality of included studies

1

Are the study objectives clearly stated?

2

Is the methodology of study suitable?

3

Is the study design considered correctly?

4

Is the research strategy designed correctly?

5

Have the inclusion criteria been chosen correctly?

6

Is the data extraction correctly chosen?

7

Is the study quality assessment tool considered correctly?

8

Is the synthesis of the data done correctly?

9

Is the interpretation of the data correctly done?

10

Is the results report clearly stated?