Interpreting Submitted Patient Health Status Data
The submitted data indicates the patient's health status through standardized patient-reported outcome measures, which are essential for evaluating symptom burden, functional status, and health-related quality of life (HRQL) that cannot be accurately captured through other clinical metrics. 1
Understanding Patient-Reported Health Status Data
Patient health status data consists of three key components:
- Symptom burden: Types and frequency of symptoms experienced by the patient, including those from the disease itself or from medical treatments 1
- Functional status: Physical, mental/emotional, and social functioning capabilities 1
- Health-related quality of life (HRQL): The patient's perception of discrepancy between actual and desired functional status and overall impact of disease on their well-being 1
Clinical Significance of the Data
Value Beyond Traditional Clinical Metrics
- Patient-reported health status provides unique information that cannot be accurately inferred from anatomic or physiological tests alone 1
- Studies consistently show that measures such as ejection fraction, B-type natriuretic peptide, and extent of coronary artery disease correlate poorly with patient-reported quality of life 1
- Two patients with identical clinical diagnoses and test results may have vastly different symptom burdens, functional capabilities, and quality of life 1
Validated Assessment Tools
- Disease-specific health status surveys provide standardized scoring algorithms with domain scores (symptoms, physical function, quality of life) and summary scores 1
- Cardiovascular-specific validated tools include:
- Seattle Angina Questionnaire (SAQ) for coronary artery disease 1
- Kansas City Cardiomyopathy Questionnaire (KCCQ) for heart failure 1
- Minnesota Living with Heart Failure Questionnaire for heart failure 1
- Stroke Impact Scale and Stroke-Specific Quality of Life Scale for stroke patients 1
- Peripheral Artery Questionnaire for peripheral artery disease 1
Clinical Application of the Data
For Treatment Decision-Making
- The data provides critical information for determining appropriate therapeutic interventions based on the patient's symptom burden and functional limitations 1
- Patient-reported outcomes should guide clinical decision-making, particularly for interventions aimed at improving symptoms and quality of life rather than mortality 1
- The data helps identify patients who may benefit from additional resources such as disease management programs 1
For Monitoring Treatment Effectiveness
- Serial measurements allow for evaluation of treatment effectiveness from the patient's perspective 1
- Clinically important differences/changes in scores have been established for many instruments, facilitating interpretation of meaningful improvement or deterioration 1
- Changes in scores over time can indicate need for treatment adjustment when symptoms or function worsen 1
Data Quality Considerations
Interpretation Guidelines
- Interpretation should consider both statistical significance and clinical importance of changes in scores 2
- Group-based methods provide useful thresholds for:
Potential Limitations
- Caution is needed to set thresholds above bounds of measurement error to avoid "false-positive changes" 2
- The timing of assessment relative to healthcare episodes may affect interpretation 1
- Patient must be in a health state sufficient to self-report (not altered or in extremis) 1
Integration with Other Clinical Data
- Patient-reported data should complement, not replace, other clinical assessments including history, physical examination, laboratory tests, and diagnostic studies 1
- The data provides context for interpreting other clinical findings and helps prioritize treatment goals 1
- For comprehensive evaluation, the data should be integrated with other elements of the Data Science cycle: collection, integration, analysis/prediction, and results communication 1
Documentation and Reporting Standards
- Uniform documentation standards should be followed to facilitate quality control and scientific evaluation 1
- Core data elements should always be obtained, while optional data may be collected under specific circumstances 1
- Data collection should be planned, with consideration for manual, automatic, and electronic collection methods 1