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Type: Journal article
Title: A head-to-head comparison of the de Morton Mobility Index (DEMMI) and Elderly Mobility Scale (EMS) in an older acute medical population
Author: de Morton, N.
Nolan, J.
O'Brien, M.
Thomas, S.
Govier, A.
Sherwell, K.
Harris, B.
Markham, N.
Citation: Disability and Rehabilitation, 2015; 37(20):1881-1887
Publisher: Taylor & Francis
Issue Date: 2015
ISSN: 1464-5165
Statement of
Natalie A. de Morton, Jo Nolan, Michael O, Brien, Susie Thomas, Adam Govier, Karen Sherwell, Bruce Harris, and Noel Markham
Abstract: Purpose: To compare the clinimetric properties of the de Morton Mobility Index (DEMMI®) and the Elderly Mobility Scale (EMS). Method: A head-to-head comparison of the EMS and DEMMI® with 120 consecutive older acute medical patients. The DEMMI® and EMS were administered within 48 h of hospital admission and discharge. Results: At admission, 6% and 15% of participants scored the lowest scale score for the DEMMI® and EMS, respectively. For the DEMMI®, 17% of participants scored within the minimal detectable change of the lowest scale score compared to 20% for the EMS at admission. At hospital discharge, DEMMI® scores were normally distributed and the EMS had a ceiling effect. Similar evidence of convergent, discriminant and known groups validity were obtained for the DEMMI® and EMS. There was no significant difference in responsiveness to change between the DEMMI® and EMS. The EMS was significantly quicker to administer compared to the DEMMI®. Conclusion: The DEMMI® and EMS are both valid measures of mobility for older acute medical patients. The DEMMI® has a broader scale width than the EMS with interval level measurement and therefore provides a more accurate method for measuring and monitoring changes in mobility for older acute medical patients.
Keywords: de Morton Mobility Index; Elderly mobility Scale; hospital; measurement; mobility; older persons; physical ability
Rights: © 2014 Informa UK Ltd.
DOI: 10.3109/09638288.2014.982832
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