Clinicians' heuristic assessments of radiographs compared with Kellgren-Lawrence and Ahlback ordinal grading: an exploratory study of knee radiographs using paired comparisons.

ABSTRACT:

Objectives

Ordinal scales provide means for communicating the severity of a condition, but they are affected by cognitive biases, they introduce statistical problems and they sacrifice resolution. Clinicians discern more details than contained in scales, for example, when assessing radiographs, but clinicians' distinctions are often based on experience-based rules of thumb, that is, heuristics. The objectives of this study are to compare clinicians' heuristic assessments to ordinal grading, to identify case elements that influence clinicians' judgements and to present a method for quantifying heuristic assessments.

Design

Clinicians were presented with 17 207 random pairs from a set of 1087 knee radiographs. For each pair, the radiograph with more severe osteoarthritis was s

SUBMITTER: Pedersen MM 

PROVIDER: S-EPMC7942253 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature