Validity and Reliability of a Questionnaire for Evaluating Nocturia, Nocturnal Enuresis and Sleep-Interruptions in an Elderly Population

The Measurement of Observer Agreement for Categorical Data

J. Richard Landis, Gary G. Koch · Biometrics · 1977 · 78.9K citations · Full text

Public Health, Biostatistics, Categorical Data Analysis +12

A Coefficient of Agreement for Nominal Scales

Jacob Cohen · Educational and Psychological Measurement · 1960 · 41.3K citations

Education, Educational Assessment, Educational Measurement +8

A New Method for Measuring Daytime Sleepiness: The Epworth Sleepiness Scale

Murray W. Johns · SLEEP · 1991 · 17.2K citations · Full text

Medicine, Neurology, Psychometrics +16

A 12-Item Short-Form Health Survey

John E. Ware, Mark Kosinski, Susan Keller · Medical Care · 1996 · 17.1K citations

Pharmacy, Educational Measurement, Health Assessment +16

Cross-Validation of Item Selection and Scoring for the SF-12 Health Survey in Nine Countries

Barbara Gandek, John E. Ware, Neil K. Aaronson et al. · Journal of Clinical Epidemiology · 1998 · 2.9K citations

Education, Health Sciences, Differential Item Functioning +10