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Table 5 Quality of measurement properties

From: Patient-reported outcome measures used in patients with primary sclerosing cholangitis: a systematic review

PROM Internal consistency Test-retest reliability Measurement error Content validity Structural validity Hypothesis testing Criterion validity Responsiveness
       Discriminant validity Concurrent validity  
NIDDK-QA ? ? NR NR NR ? ? NR
PSC PROM + + NR + + NR NR NR
  1. Level of evidence (COSMIN): +++ or --- ‘Strong’ Consistent findings in multiple studies of good methodological quality, ++ or – ‘Moderate’ Consistent findings in multiple studies is fair, + or – ‘Limited’ One study of fair methodological quality, +/− ‘Conflicting’ Findings are conflicting,? ‘Unknown’ Studies of poor methodological quality. NIDDK-QA National institute of diabetes and digestive and kidney disease liver transplant questionnaire, PSC PRO Primary Sclerosing Cholangitis Patient Reported Outcome