The responsiveness and predictive validity of the de Morton Mobility Index in geriatric rehabilitation

[The Lübeck Scale of Basic Mobility : Assessment of geriatric patients with severely impaired mobility]

BACKGROUND

In the geriatric assessment of mobility, the timed up and go (TUG) test is often used; however, many inpatients are unable to master this test. The Lübeck Scale of Basic Mobility (LSBM) was developed as a performance test for this target group.

OBJECTIVE

The study investigated the properties of the 7‑task LSBM, which has a scaling at item level based on the 5‑level assessment of impairments according to the ICF.

MATERIAL AND METHODS

In 77 patients who had not mastered the TUG test at acute geriatric hospital admission, the LSBM was completed at intervals of 7-18 days (t0, t1), including one rating by 2 investigators. For convergent validity, the De Morton Mobility Index (DEMMI) was used.

RESULTS

The LSBM score and DEMMI score were highly correlated (-0.880, p < 0.001). A floor effect did not occur with LSBM and occurred with DEMMI in 5 patients (6.5%). The predictive validity for predicting coping with TUG test at discharge based on the sum score at t0 was -0.577 for the LSBM, and 0.542 for the DEMMI (Spearman's correlation, p = 0.001). The interrater reliability of the LSBM was 0.983 (p < 0.001), the correlation between test and retest was 0.836 (p < 0.001) and the internal consistency via Cronbach's α was 0.876. The effect size as a measure of change sensitivity was Cohen's d 0.711.

CONCLUSION

The LSBM facilitates treatment goal setting and allows standardized documentation of even small improvements and deteriorations in patients with reduced basic mobility.

Effects of Community-Based Physical-Cognitive Training, Health Education, and Reablement among Rural Community-Dwelling Older Adults with Mobility Deficits

Reablement services are approaches for maintaining and improving the functional independence of older adults. Previous reablement studies were conducted in a home environment. Due to the limited evidence on the effects of multicomponent interventions and reablement in a community-based context, this study aimed to develop and evaluate the effect of community-based physical-cognitive training, health education, and reablement (PCHER) among rural community-dwelling older adults with mobility deficits. The trial was conducted in rural areas of New Taipei City, Taiwan. Older adults with mild to moderate mobility deficits were recruited from six adult daycare centers, and a cluster assignment was applied in a counterbalanced order. The experimental group (n = 16) received a PCHER intervention, comprising 1.5 h of group courses and 1 h of individualized reablement training, while the control group (n = 12) underwent PCHE intervention, comprising 1.5 h of group courses and 1 h of placebo treatment. A 2.5-h training session was completed weekly for 10 weeks. The outcome measures contained the de Morton Mobility Index (DEMMI), the Saint Louis University Mental Status (SLUMS) Examination, the Barthel Index (BI), the Short Physical Performance Battery (SPPB), and the Canadian Occupational Performance Measure (COPM). The PCHER significantly improved the DEMMI, SLUMS, BI, SPPB, and COPM (all p < 0.05), with medium-to-large effect sizes. PCHER also showed an advantage over PCHE in terms of the SPPB (p = 0.02). This study verified that combining individualized reablement with group-based multicomponent training was superior to group courses alone in enhancing the functional abilities of community-dwelling older adults with mobility deficits.