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Reliability of Readmission Rates as a Hospital Quality Measure in Cardiac Surgery
Wednesday, April 2, 2014
Source Name: Annals of Thoracic Surgery
Quality metrics based on administrative databases are sometimes unreliable. This study examined data from nearly 245,000 Medicare patients undergoing CABG to determine the reliability of 30-day readmission rates and whether that metric is an appropriate indicator of hospital quality. The median readmission rate was 17.6%, but less than half lf the rate was attributed to the true signal, the rest being measurement noise. Less than 5% of hospitals had sufficient CABG volume to achieve reliable measurement of readmission rates.