Adaptación transcultural y validación al español de la escala de movilidad funcional DEMMI (DeMorton Mobility Index) para adultos mayores
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Introduction: the De Morton Mobility Index (DEMMI) is a valid and reliable scale to evaluate the functional mobility of the elderly. Aim: valídate a Spanish version for hospitalized patients in a general ward.
Material and methods: translation and cross-cultural adaptation, evaluation of inter-observer reliability and criterion validation exploring the correlation between DEMMI and Barthel scores at hospital admission and also between the subjective perception of the change in mobility by the patient himself and that of DEMMI score, and also, evaluating the association between DEMMI and the degree of support required at hospital discharge (n = 87). Its internal consistency was evaluated using Kuder-Richardson (KR) and Cronbach (n = 104) coefficients.
Results: correlation between DEMMI and Barthel scores was good (Spearman's Rho = 0.78: p < = 0.0001), while correlation between patient's perception of change in mobility and variation in DEMMI score was moderate (Spearman's Rho = 0.50; p < 0.0001). Those discharged with a high level of support had a lower DEMMI score upon admission (28.1; 95% CI 24.9 to 31.3) than those who didn´t require it (48; 44.4 to 53.0) .
Internal consistency was adequate (KR = 0.827 and Cronbach = 0.745; Pearson's Rho = 0.7885; p < 0.00001).
Conclusion: internal consistency and interobserver reliability of the Spanish version of DEMMI score are good, while its changes correlate well with those perceived by the patients themselves. We consider that it can be used as another element to estimate at hospital admission, the degree of support they will require upon discharge.
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