PURPOSE: Many patients suffer long term loss of mobility after hip fracture but there is no gold standard method for measuring mobility in this group. We aimed to validate a new mobility outcome measure, the de Morton Mobility Index (DEMMI) in a hip fracture population during inpatient rehabilitation. METHOD: The DEMMI was compared with the existing measures of activity limitation: 6 minute walk test, 6 metre walk test and Barthel Index on 109 consecutive patients admitted to rehabilitation after surgery for hip fracture. Patients were assessed by a physiotherapist at admission and discharge. Scale width, validity, minimal clinically important difference (MCID), responsiveness, and unidimensionality were investigated. RESULTS: Evidence of convergent, discriminant and known groups validity were obtained for the DEMMI. Responsiveness was similar across instruments and the MCIDs were consistent with previous reports. A floor effect was identified for the 6 metre walk test and 6 minute walk test at hospital admission. Rasch analysis identified that the DEMMI maintains its unidimensional properties in this population. CONCLUSIONS: The DEMMI has a broader scale width than existing measures of activity limitation and provides a unidimensional measure of mobility for hip fracture patients during inpatient rehabilitation.
PURPOSE: Many patients suffer long term loss of mobility after hip fracture but there is no gold standard method for measuring mobility in this group. We aimed to validate a new mobility outcome measure, the de Morton Mobility Index (DEMMI) in a hip fracture population during inpatient rehabilitation. METHOD: The DEMMI was compared with the existing measures of activity limitation: 6 minute walk test, 6 metre walk test and Barthel Index on 109 consecutive patients admitted to rehabilitation after surgery for hip fracture. Patients were assessed by a physiotherapist at admission and discharge. Scale width, validity, minimal clinically important difference (MCID), responsiveness, and unidimensionality were investigated. RESULTS: Evidence of convergent, discriminant and known groups validity were obtained for the DEMMI. Responsiveness was similar across instruments and the MCIDs were consistent with previous reports. A floor effect was identified for the 6 metre walk test and 6 minute walk test at hospital admission. Rasch analysis identified that the DEMMI maintains its unidimensional properties in this population. CONCLUSIONS: The DEMMI has a broader scale width than existing measures of activity limitation and provides a unidimensional measure of mobility for hip fracturepatients during inpatient rehabilitation.
Authors: T Braun; R-J Schulz; M Hoffmann; J Reinke; L Tofaute; C Urner; H Krämer; T Bock; N de Morton; C Grüneberg Journal: Z Gerontol Geriatr Date: 2015-02 Impact factor: 1.281
Authors: Tobias Braun; Ralf-Joachim Schulz; Julia Reinke; Nico L van Meeteren; Natalie A de Morton; Megan Davidson; Christian Thiel; Christian Grüneberg Journal: BMC Geriatr Date: 2015-05-03 Impact factor: 3.921
Authors: Nick C Leegwater; Peter A Nolte; Niels de Korte; Martin J Heetveld; Kees J Kalisvaart; Casper P Schönhuth; Bas Pijnenburg; Bart J Burger; Kees-Jan Ponsen; Frank W Bloemers; Andrea B Maier; Barend J van Royen Journal: BMC Musculoskelet Disord Date: 2016-04-08 Impact factor: 2.362
Authors: Pat G Camp; Carmen A Sima; Ashley Kirkham; Jessica A Inskip; Beena Parappilly Journal: Chron Respir Dis Date: 2019 Jan-Dec Impact factor: 2.444