extended · article · 2021

Application of the Rasch measurement framework to mammography positioning data

Patricia Whelehan; María Pampaka; Jennifer Boyd; Sarah Armstrong; Andy Evans; Gözde Özakinci; David Andrich

The purpose of this article is to provide raw data and measure-validation data pertaining to a co-submission published in European Journal of Radiology and entitled: Development and validation of a novel measure of adverse patient positioning in mammography. This Data in Brief article serves not only to provide greater detail than its companion article but also as an educational worked example of the Rasch measurement framework. Rasch measurement is a form of modern psychometric technique and our articles provide the first known example of its use in the evaluation of clinical radiological image quality. The data consist of observations of mammographic images, plus limited participant parameters relevant to the measure validation process. Also provided are validation indices produced by subjecting the primary data to Rasch analysis. An expert observer generated the primary data by review...