Milliman Advanced Risk Adjustment (MARA) software tops the competition in risk scoring study
Since the passage of the Affordable Care Act, risk scoring models play a central role in predicting or explaining healthcare expenditures. As in each of the previous SOA studies, Coefficient of Determination, or R2, was used as one measure of predictive accuracy and indicates how well data fit a statistical model. With an R2 of 55.4%, MARA's concurrent diagnosis and pharmacy model (CxAdjuster) leads the competition with the highest observed R2 for uncensored costs. For costs censored at
"We were especially pleased that in an exploration of ensemble methods of modeling, more weight was put on the MARA model than any other. To me that indicates that giving MARA the most credence resulted in the best performing composite prediction," Diane added.
MARA models are valued by clients because they produce separate risk scores for major categories of service, including inpatient, outpatient, emergency room, physician, pharmacy, and other medical care. Beyond risk scores, all MARA models provide a probability of inpatient admission and emergency department visits, plus the contribution of clinical risk drivers for more than 1,000 medical conditions.
The study, released
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