Table 2 Quality assessment measures
Checklist item | Assessment measure |
|---|---|
3 | Are the characteristics of the patients included in the study clearly described? |
9 | Have the characteristics of patients lost to follow-up been described? |
12 | Were those subjects who were prepared to participate representative of the entire population from which they were recruited? |
21 | Were the patients in different intervention groups (trials and cohort studies) or were the cases and controls (case-control studies) recruited from the same population? |