Table 5 Quality of studies on measurement properties
Measurement property | CSSQP32 | Patient Satisfaction Survey33 | Post procedure questionnaire35 | SmGHAA-9 m34 | Screening Flexible Sigmoidoscopy Assessment Questionnaire36 | ||
|---|---|---|---|---|---|---|---|
Content validity | Asking patients | Relevance | D | D | D | D | – |
Comprehensiveness | D | D | D | D | – | ||
Comprehensibility | D | D | D | D | D | ||
Asking experts | Relevance | – | D | D | – | D | |
Comprehensiveness | – | D | D | – | D | ||
Internal structure | Structural validity | A | – | A | – | A | |
Internal consistency | V | D | V | D | V | ||
Cross-cultural validity | – | – | – | – | – | ||
Other measurement properties | Reliability | – | – | – | I | A | |
Measurement error | – | – | – | – | A | ||
Criterion validity | – | – | – | – | – | ||
Construct validity | Convergent validity | – | D | – | – | V | |
Known groups validity | V | – | – | – | – | ||
Responsiveness | Comparison with gold standard | – | – | – | – | – | |
Comparison with other instruments | – | – | – | – | V | ||
Comparison between subgroups | – | – | – | – | – | ||
Comparison before and after intervention | – | – | – | – | – | ||