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PSI 90 Formula:
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PSI 90 is a composite measure that represents the weighted average of 10 component Patient Safety Indicators (PSIs). It provides a comprehensive assessment of patient safety events in healthcare facilities using harm and volume weights.
The PSI 90 is calculated using the formula:
Where:
Explanation: The composite score uses harm weights and volume weights to aggregate patient safety events into a single, standardized measure that allows for comparison across healthcare facilities.
Details: PSI 90 is crucial for healthcare quality assessment, benchmarking hospital performance, identifying areas for patient safety improvement, and meeting regulatory reporting requirements.
Tips: Enter the rates and weights for each component PSI. The calculator will compute the weighted average to determine the composite PSI 90 score. All values must be non-negative numbers.
Q1: What are the 10 component PSIs in PSI 90?
A: The components include various patient safety events such as pressure ulcers, falls, postoperative complications, and other hospital-acquired conditions.
Q2: How are the weights determined for PSI 90?
A: Weights are based on harm scores and volume measures established by regulatory bodies to reflect the relative importance and frequency of each safety event.
Q3: What is a good PSI 90 score?
A: Lower PSI 90 scores indicate better patient safety performance. Scores are typically benchmarked against national averages and peer institutions.
Q4: How often is PSI 90 calculated?
A: Most healthcare facilities calculate PSI 90 quarterly or annually for quality reporting and performance improvement purposes.
Q5: Can PSI 90 be used for international comparisons?
A: While the concept is universal, specific PSI definitions and weights may vary by country, so direct international comparisons require careful consideration of methodological differences.