Understanding Public Reporting Scores
How scores, ratings, and confidence intervals are calculated and displayed in ACC Public Reporting.
Note: STS/ACC TVT Registry has different scoring criteria. Click Here to Learn More About STS/ACC TVT Public Reporting.
Metric Scoring
Metrics are calculated using statistical models based on the most recent calendar year data. Performance is reported as a P Score, which represents how often guideline-recommended care is delivered. Scores range from 0% to 100%.
Hospital P Score
- Reflects performance of an individual hospital
- Used to compare hospital-level quality
- Higher score = Better performance
State P Score
- Reflects performance of all participating ACC hospitals within a state
- Same score shown for every hospital in that state
- Higher score = Better statewide
Understanding Star Ratings
To make performance easier to interpret, P Scores are grouped into four star categories.
For example: A hospital with a P Score of 79.0% for Metric 4855 receives 2 stars because the score falls within the 75.00%-84.99% range. Metric 4855 Ranges
Interval Estimate
Every P Score is an estimate based on available data. The amount of available data affects how certain the estimate is.
Green Arrow = Best estimate of performance (P Score)
Interval Box = Range where the score is likely to fall
Smaller Box = Greater confidence
Larger Box = More uncertainty
If the model were re-run, there is a 95% probability that the recalculated score would fall within the interval shown.
Annual Minimum Data Requirements
A minimum number of cases is required before a P Score can be assigned. This helps ensure scores accurately represent performance. Hospitals below the minimum case threshold will not receive a publicly reported score for that metric.
Note: STS/ACC TVT Registry has different scoring criteria. Click Here to Learn More About STS/ACC TVT Public Reporting.