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Biostatistical aspects of outcome evaluation using TISS-28
1II Department of Surgery, University of Cologne, Germany. r.lefering@uni-koeln.de
The European Journal of Surgery. Supplement. : = Acta Chirurgica. Supplement
|July 13, 2000
Summary
The Therapeutic Intervention Scoring System (TISS-28) offers a reliable method for quantifying patient care in intensive care units. This scoring system effectively assesses therapeutic activities and correlates with patient outcomes like ICU length of stay.
Area of Science:
- Critical Care Medicine
- Health Services Research
Background:
- Patient outcome evaluation in intensive care is crucial for resource allocation and quality improvement.
- Traditional methods may not fully capture the complexity of therapeutic interventions.
- The Therapeutic Intervention Scoring System (TISS) provides a framework for quantifying patient care.
Purpose of the Study:
- To evaluate the utility of the reduced version of the TISS, known as TISS-28, for quantifying therapeutic activities in intensive care.
- To assess the reliability and validity of TISS-28 measurements.
- To explore the correlation of TISS-28 with patient outcomes and established severity scores.
Main Methods:
- Utilized the TISS-28, a 28-item reduced version of the TISS, for quantifying therapeutic interventions.
- Assessed inter-observer variation to ensure reliability of TISS-28 measurements.
- Correlated cumulative TISS-28 scores with the APACHE II severity of illness classification system.
- Examined the relationship between cumulative TISS-28 values and length of ICU stay.
Main Results:
- TISS-28 provides a reliable assessment of therapeutic activities with limited observer variation.
- Cumulative TISS-28 values showed a strong correlation with length of ICU stay (r = 0.98).
- Average TISS-28 scores of 27.2 points/day were observed in a mixed surgical ICU.
- TISS-28 is a sensitive measure for patients with low mortality risk and supports economic analysis.
Conclusions:
- TISS-28 is a valid and reliable tool for quantifying therapeutic interventions in intensive care settings.
- The system aids in outcome assessment, particularly for patients with less severe conditions.
- TISS-28 facilitates sensitive outcome measurement and supports the clinical application of economic analyses in critical care.
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