Table 1: Results of Quality assessment for the four studies. |
Criteria |
Dayan, et al |
HSS, et al |
Lanata, et al |
Sabchare on, et al |
Villar, et al |
Leo, et al |
2. Was the method of randomization adequate( i. e., use of randomly generated |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
assignment)? |
|
|
|
|
|
|
3. Was the treatment allocation concealed( so that assignments could not be predicted)? |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
4. Were study participants and providers blinded to treatment group assignment?
5. Were the people assessing the outcomes blinded to the participants ' group assignments? 6. Were the groups similar at baseline on important characteristics that could affect outcomes( e. g., demographics, risk factors, co-morbid conditions)? 7. Was the overall drop-out rate from the study at endpoint 20 % or lower of the number allocated to treatment? 8. Was the differential dropout rate( between treatment groups) at endpoint 15 percentage points or lower?
9. Was there high adherence to the intervention protocols for each treatment group? 10. Were other interventions avoided or similar in the groups( e. g., similar background treatments)? 11. Were outcomes assessed using valid and reliable measures, implemented consistently across all study participants? 12. Did the authors report that the sample size was sufficiently large to be able to detect a difference in the main outcome between groups with at least 80 % power?
Yes( subject blinded)
Yes( observer blinded)
Yes( subject blinded)
Yes( observer blinded)
Yes( subject blinded)
Yes( observer blinded)
Yes( subject blinded)
Yes( observer blinded)
Yes( subject blinded)
Yes( observer blinded)
Yes( subject blinded)
Yes Yes Yes Yes Yes Yes
Yes( 10 % dropout)
Yes( 3 % points diff.)
Yes( 2 % dropout)
Yes( 0.5 % points diff.)
Yes( 7 % dropout)
Yes( 3 % points diff.)
No
Yes( 0.2 % points diff.)
Yes( 10 % dropout)
Yes( 0.3 % points diff)
No
Yes( 7.26 % dropout)
Yes( 1 % points diff.)
Yes Yes Yes Yes Yes Yes
No No No No No No
Yes Yes Yes Yes Yes Yes
Yes Yes Yes Yes Yes Yes