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The Stata Journal
Volume 17 Number 4: pp. 1003-1014



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Assessing the calibration of dichotomous outcome models with the calibration belt

Giovanni Nattino
Division of Biostatistics
College of Public Health
The Ohio State University
Columbus, OH
nattino.1@osu.edu
Stanley Lemeshow
Division of Biostatistics
College of Public Health
The Ohio State University
Columbus, OH
Gary Phillips
Center for Biostatistics
The Department of Biomedical Informatics
The Ohio State University
Columbus, OH
Stefano Finazzi
GiViTI Coordinating Center
Laboratory of Clinical Epidemiology
IRCCS Istituto di Ricerche Farmacologiche `Mario Negri'
Ranica, Italy
Guido Bertolini
GiViTI Coordinating Center
Laboratory of Clinical Epidemiology
IRCCS Istituto di Ricerche Farmacologiche `Mario Negri'
Ranica, Italy
Abstract.  The calibration belt is a graphical approach designed to evaluate the goodness of fit of binary outcome models such as logistic regression models. The calibration belt examines the relationship between estimated probabilities and observed outcome rates. Significant deviations from the perfect calibration can be spotted on the graph. The graphical approach is paired to a statistical test, synthesizing the calibration assessment in a standard hypothesis testing framework. In this article, we present the calibrationbelt command, which implements the calibration belt and its associated test in Stata.
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View all articles by these authors: Giovanni Nattino, Stanley Lemeshow, Gary Phillips, Stefano Finazzi, Guido Bertolini

View all articles with these keywords: calibrationbelt, logistic regression, calibration, goodness of fit, binary outcome

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