Titre
Assessing bias, precision, and agreement in method comparison studies.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Taffé, P.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1477-0334
Statut éditorial
Publié
Date de publication
2020-03
Volume
29
Numéro
3
Première page
778
Dernière page/numéro d’article
796
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Résumé
Recently, a new estimation procedure has been developed to assess bias and precision of a new measurement method, relative to a reference standard. However, the author did not develop confidence bands around the bias and standard deviation curves. Therefore, the goal in this paper is to extend this methodology in several important directions. First, by developing simultaneous confidence bands for the various parameters estimated to allow formal comparisons between different measurement methods. Second, by proposing a new index of agreement. Third, by providing a series of new graphs to help the investigator to assess bias, precision, and agreement between the two measurement methods. The methodology requires repeated measurements on each individual for at least one of the two measurement methods. It works very well to estimate the differential and proportional biases, even with as few as two to three measurements by one of the two methods and only one by the other. The repeated measurements need not come from the reference standard but from either measurement methods. This is a great advantage as it may sometimes be more feasible to gather repeated measurements with the new measurement method.
PID Serval
serval:BIB_410A1DFB525B
PMID
Date de création
2019-05-09T12:09:18.387Z
Date de création dans IRIS
2025-05-20T16:27:23Z