Empirical evidence of bias in infertility research: overestimation of treatment effect in crossover trials using pregnancy as the outcome measure

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

Weighted kappa: Nominal scale agreement provision for scaled disagreement or partial credit.

Jacob Cohen · Psychological Bulletin · 1968 · 8.5K citations

Education, Educational Measurement, Psychology +11

Empirical Evidence of Bias

Kenneth F. Schulz · JAMA · 1995 · 5.5K citations

Public Health, Biostatistics, Obstetrics +17

Goodness of fit tests for the multiple logistic regression model

David W. Hosmer, Stanley Lemesbow · Communication in Statistics- Theory and Methods · 1980 · 1.8K citations

Public Health, Behavioral Sciences, Psychometrics +10

The two‐period cross‐over clinical trial.

Michael Hills, P. Armitage · British Journal of Clinical Pharmacology · 1979 · 1.4K citations · Full text

Medicine, Biostatistics, Good Clinical Practice +5