Rasch measurement using dichotomous scoring.
The Rasch measurement model using dichotomous scoring of item response data from a newly created Mobility Scale administered to elderly independent living individuals is presented. The dichotomous scoring model, item calibration, person calibration, logit scale, normative scale score, reliability, and validity are explained. Results indicated that additional activity statements need to be written and tested to improve the Mobility Scale instrument.
Schumacker
Randall E
RE
P. O. Box 311335, College of Education, University of North Texas, Denton, TX 76203-1335 USA. rschumacker@unt.edu
D000203:Activities of Daily Living; D000368:Aged; D000375:Aging; D002138:Calibration; D003625:Data Collection / Q000379:methods; D006801:Humans; D015233:Models, Statistical; D015203:Reproducibility of Results