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Titre : | Performance of an Item Response Theory-Based Computer Adaptive Test in Identifying Functional Decline (2012) |
Auteurs : | Andrea L. Cheville ; Kathleen Yost ; Dirk Larson ; et al. |
Type de document : | Article |
Dans : | Archives of Physical Medicine and Rehabilitation (2012/7, 2012) |
Article en page(s) : | pp. 1153-1160 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Mesures épidémiologiques ; Mobilité réduite ; Psychométrie ; Rééducation et réadaptation ; Tumeurs |
Mots-clés: | Epidemiologic measurements ; Mobility limitation ; Neoplasms ; Psychometrics |
Résumé : |
Objective To achieve a low respondent burden and increase the responsiveness of functional measurement by using an item response theory-based computer adaptive test (CAT), the Activity Measure for Post-Acute Care (AM-PAC) CAT. Design Two-year prospective cohort study. Setting Telephonic assessments from a quaternary medical center. Participants Patients (N=311) with late-stage lung cancer (LC). Interventions Monthly assessments for up to 2 years. Disease progression was determined via record abstraction. Anchor-based responsiveness techniques were used to compare AM-PAC-CAT score changes between global rating of change (GRC) question response levels, as well as between intervals when adverse clinical events or symptom worsening did and did not occur. Distribution-based responsiveness assessments included calculation of the standardized effect size (SES) and standardized response mean (SRM). Main Outcome Measures AM-PAC-CAT, symptom numerical rating scales, and a GRC. Results Administration time averaged 112 seconds over 2543 interviews. AM-PAC-CAT score changes became more positive as GRC responses reflected more improved states: a lot worse (−11.62), a little worse (−1.92), the same (−.10), a little better (1.01), and a lot better (2.82). Score changes were negative when associated with adverse clinical events. The SES and SRM for score differences between 1 to 2 and 9 to 10 months prior to death were −.87 and −1.13, respectively. The minimally important difference estimate was defined by the mean CAT session SE at 2.0. Conclusions The AM-PAC-CAT imposes a low, |
Disponible en ligne : | Oui |
En ligne : | http://www.archives-pmr.org/article/S0003-9993%2812%2900101-3/abstract |