Hip Fracture or Not? The Reversed Prevalence Effect among Non-Experts' Diagnosis

Autor/inn/en	Zhang, Hanshu; Hung, Shen-Wu; Chen, Yu-Pin; Ku, Jan-Wen; Tseng, Philip; Lu, Yueh-Hsun; Yang, Cheng-Ta
Titel	Hip Fracture or Not? The Reversed Prevalence Effect among Non-Experts' Diagnosis
Quelle	In: Cognitive Research: Principles and Implications, 8 (2023), Artikel 1 (10 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Lu, Yueh-Hsun)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
DOI	10.1186/s41235-022-00455-w
Schlagwörter	Radiology; Human Body; Injuries; Medical Evaluation; Clinical Diagnosis; Expertise; Allied Health Personnel; Physicians; Novices + Suchen Sie Ihr Suchwort? Radiologie; Menschlicher Körper; Expert appraisal; Physician; Doctor; Arzt
Abstract	Despite numerous investigations of the prevalence effect on medical image perception, little research has been done to examine the effect of expertise, and its possible interaction with prevalence. In this study, medical practitioners were instructed to detect the presence of hip fracture in 50 X-ray images with either high prevalence (N[subscript signal] = 40) or low prevalence (N[subscript signal] = 10). Results showed that compared to novices (e.g., pediatricians, dentists, neurologists), the manipulation of prevalence shifted participant's criteria in a different direction for experts who perform hip fracture diagnosis on a daily basis. That is, when prevalence rate is low (p[subscript fracture-present] = 0.2), experts held more conservative criteria in answering "fracture-present," whereas novices were more likely to believe there was fracture. Importantly, participants' detection discriminability did not vary by the prevalence condition. In addition, all participants were more conservative with "fracture-present" responses when task difficulty increased. We suspect the apparent opposite criteria shift between experts and novices may have come from medical training that made novices to believe that a miss would result in larger cost compared to false positive, or because they failed to update their prior belief about the signal prevalence in the task, both would suggest that novices and experts may have different beliefs in placing the optimal strategy in the hip fracture diagnosis. Our work can contribute to medical education training as well as other applied clinical diagnosis that aims to mitigate the prevalence effect. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01