The included studies received a low risk of bias if no other potential threats to validity were identified.
No evidence of divergent validity or known-groups validity was identified for any of the four PRO measures of interest in patients with mCRPC.
The questionnaire was piloted on a small number of qualified supplementary prescribers – both pharmacists and nurses – and no problems with content or face validity were identified.
Sixteen instruments that are specific to knee problems with evidence for reliability and validity were identified by a recent systematic review [ 2].
The criterion-related validity was identified by exploring Spearman's correlation with the most widely used vision-specific quality of life questionnaire NEI-VFQ-25.
CC measured by the CCS was related to a similar concept, SOC, and also to self-efficacy for helping elderly neighbors to prevent elderly social isolation, and their concurrent validity was identified.
If issues with validity are identified we will revise the measure's content and items using small focus groups with injury patients and family members to ensure we are addressing priority aspects of injury care for patients.
Studies concerned with the psychometric properties of the FIM + FAM, as well as studies that were not primarily psychometric but might report relevant statistics (e.g. predictive validity), were identified by two investigators (L.T.S. and R.J.S). on the basis of the title or abstract.
Furthermore, the aim of this systematic review was to comment on the measurement properties of SRPAQs, but, unfortunately, only studies investigating test retest reliability, internal consistency and criterion, construct and structural validity, were identified, reflecting the limited research to date on measurement properties.
Convergent validity was identified with a significant large correlation between the four-point scoring system for diagnosis of ICU-AW (less than 24 out of 36) with awakening PFIT score (rho = 0.70; P <0.001) and handgrip strength (rho = 0.66, P <0.001).
