Article

OBJECTIVE: To examine the reproducibility, construct validity, and
unidimensionality of the Dutch translation of the de Morton Mobility Index
(DEMMI), a performance-based measure of mobility for older patients. DESIGN:
Cross-sectional study. SETTING: Rehabilitation center (reproducibility study) and
hospital (validity study). PARTICIPANTS: Patients (N=28; age >65y) after
orthopedic surgery (reproducibility study) and patients (N=219; age >65y) waiting
for total hip or total knee arthroplasty (validity study). INTERVENTION: Not
applicable. MAIN OUTCOME MEASURES: Not applicable. RESULTS: The intraclass
correlation coefficient for interrater reliability was high (.85; 95% confidence
interval, 71-.93), and minimal detectable change with 90% confidence was 7 on the
100-point DEMMI scale. Rasch analysis identified that the Dutch translation of
the DEMMI is a unidimensional measure of mobility in this population. DEMMI
scores showed high correlations with scores on other performance-based measures
of mobility (Timed Up and Go test, Spearman r=-.73; Chair Rise Time, r=-.69;
walking test, r=.74). A lower correlation of .44 was identified with the
self-report measure Western Ontario and McMaster Universities Osteoarthritis
Index. CONCLUSIONS: The Dutch translation of the DEMMI is a reproducible and
valid performance-based measure for assessing mobility in older patients with
knee or hip osteoarthritis.
CI - Copyright (c) 2011 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS