Table 1 Criteria used to assess the theoretical framework and methodological development of health outcome measures

1. What construct is being measured?

2. Has the construct been defined?

3. Was the construct part of a (specified) theoretical model?

Methodological development

4. What scaling strategy was adopted?

5. How were the items generated (to tap the construct)?

6. How was item reduction conducted?

7. What was the response format?

8. What was the scoring method?