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Reliability of a Smartphone App to Objectively Monitor Performance Outcomes in Degenerative Cervical Myelopathy:
Alvaro Yanez Touzet1,2, Tatiana Houhou3, Zerina Rahic3
1School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom.
JMIR Formative Research
|May 24, 2024
Summary
The MoveMed digital outcome measures demonstrated high reliability for assessing degenerative cervical myelopathy (DCM) in adults. These smartphone-based tests offer a promising, cost-effective solution for remote patient monitoring and clinical trials.
Area of Science:
- Neurology
- Digital Health
- Clinical Measurement
Background:
- Developing new clinical measures for degenerative cervical myelopathy (DCM) is a priority for AO Spine RECODE-DCM Research.
- Digital outcome measures offer a remote, repeatable, and economical solution to challenges in detecting DCM and its changes, reducing diagnostic delays and clinical trial costs.
Purpose of the Study:
- To assess the reliability of the MoveMed battery of digital performance outcome measures for degenerative cervical myelopathy (DCM).
Main Methods:
- A prospective observational study was conducted in decentralized secondary care in England.
- Test-retest reliability was evaluated using intraclass correlation (ICC) of agreement, with secondary outcomes including SEM and SDC of agreement.
- Consensus-Based Standards for the Selection of Health Measurement Instruments (COSMIN) criteria were used to determine adequate reliability (ICC ≥0.7) and risk of bias.
Main Results:
- Seven adults with DCM participated, using a smartphone for assessments.
- All MoveMed tests showed moderate to excellent test-retest reliability (ICC 0.84-0.98) and low measurement errors in the MCID ≤1 group.
- The fast tap, hold, and typing tests met reliability criteria (ICC ≥0.7) in both MCID ≤1 and MCID ≤2 groups, with no recorded risk of bias.
Conclusions:
- The MoveMed digital outcome measures demonstrate very good quality evidence of reliability in adults with DCM, according to COSMIN criteria.
- These findings support the use of MoveMed for remote, reliable, and economical assessment of DCM.
