American Heart Journal · 1992 · 1K citations · 18 references
MedicineCardiologyInternal MedicineOutcomes ResearchCardiac AssessmentCardiac MedicationsCardiovascular AssessmentCardiovascular DiseaseHeart FailureHeart Failure Functional StatusPatient Outcome EvaluationPatient Outcome MeasurementPlacebo-controlled Efficacy Assessment
18
Coefficient Alpha and the Internal Structure of Tests
Lee J. Cronbach · Psychometrika · 1951 · 43.2K citations · Full text
Social Sciences, Educational Assessment, Educational Measurement +14