Related Experiment Videos
First steps in building ACME--an admission case-mix system for the elderly
1Elderly Services, Selly Oak Hospital, Birmingham.
Age and Ageing
|March 1, 1996
Summary
Geriatric Medicine specialists can now use CMIX, a simple score based on illness recovery and functional status, to better understand patient variability. This tool aids in comparing performance and improving care for elderly patients.
Area of Science:
- Geriatric Medicine
- Healthcare Management
- Clinical Informatics
Background:
- Geriatric Medicine specialists manage diverse elderly patient populations, including acute care, rehabilitation, and continuing care.
- Variability in patient types across services hinders performance comparison among clinicians.
- Existing casemix systems are often unsuitable for daily use by geriatricians due to homogeneity requirements or excessive detail.
Purpose of the Study:
- To develop a practical, simple casemix system for individual Geriatric Medicine specialists.
- To create a tool for daily clinical use that accounts for patient heterogeneity.
- To facilitate performance comparison and audit within Geriatric Medicine.
Main Methods:
- Patients classified based on illness acuteness/recovery potential and functional status (mobility, cognitive impairment).
- A three-point score, CMIX, was developed incorporating these factors.
- Prospective study of 400 new admissions across two centers.
Main Results:
- CMIX explained 19.5% of the variability in patient length of stay.
- Age and sex explained only 1% of the variability in length of stay.
- Significant differences in patient outcomes were observed across the three CMIX categories.
Conclusions:
- The CMIX score offers a practical casemix system for Geriatric Medicine.
- CMIX effectively captures key patient factors influencing length of stay and outcome.
- A simple graphical method for outcome classification is proposed for audit purposes.