What is Kappa and How Does It Measure Inter-rater Reliability? - The Analysis Factor
Research Collective Blog - The Basics of Validity and Reliability in Research
Cronbach's Alpha in SPSS Statistics - procedure, output and interpretation of the output using a relevant example | Laerd Statistics.
Interrater reliability (Kappa) using SPSS
Cohen's Kappa | Real Statistics Using Excel
Validity and reliability of an adapted questionnaire measuring knowledge, awareness and practice regarding familial hypercholesterolaemia among primary care physicians in Malaysia | BMC Cardiovascular Disorders | Full Text
Development, test-retest reliability and validity of the Pharmacy Value-Added Services Questionnaire (PVASQ)