1. Was the sample frame appropriate to address the target population? |
2. Were study participants sampled in an appropriate way? |
3. Was the sample size adequate? |
4. Were the study subjects and the setting described in detail? |
5. Was the data analysis conducted with sufficient coverage of the identified sample? |
6. Were valid methods used for the identification of the condition? |
7. Was the condition measured in a standard, reliable way for all participants? |
8. Was there appropriate statistical analysis? |
9. Was the response rate adequate, and if not, was the low response rate managed appropriately? |