Translation, validity, and reliability of the Thai de Morton Mobility Index in patients following hip surgery.
Chanokporn Jitpanya, Surachai Maninet, Chanipa Yoryuenyong
PMID 40786856WHAT IT FOUND
The Thai de Morton Mobility Index reliably assesses mobility in hip surgery patients.
It correlates strongly with existing scales and distinguishes patients by age, pain, and fatigue. Nurses can use it to track recovery, though it takes about 10 minutes to administer.
Key findings
01The Thai DEMMI showed strong convergent validity with the Parker Mobility Scale (r = 0.761) and good internal consistency (Cronbach’s α = 0.88).
02The tool effectively differentiated mobility levels based on known factors: older age, female gender, cognitive impairment, higher comorbidity, longer hospital stay, poor sleep, fatigue, and pain were all associated with significantly lower DEMMI scores.
03The assessment took a mean of 10.2 minutes to complete, and no adverse events such as falls or pain occurred during testing.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
Participants were recruited from only four hospitals, limiting generalizability to other healthcare settings in Thailand. The study was cross-sectional, so it does not demonstrate the tool's responsiveness to change over time during rehabilitation. Some items (e.g., 'perform a bridge', 'lie to sit') showed poor fit in Rasch analysis, suggesting they may not function optimally in this population, though the authors retained them.
Declared interests
The authors declare there is no conflict of interest.
The easy way to misread this
Do not assume the Thai DEMMI is a quick screening tool. It takes an average of 10.2 minutes to administer, which is significantly longer than simpler scales like the Parker Mobility Scale or the New Mobility Scale.