Algorithms are used to compare each "hospital-procedure pair" to a national average of each procedure's charges.
This result is used to calculate a score for each "hospital-procedure pair" by counting the standard deviations for each procedure's charges (National). This score is used to
calculate an aggregated total score of all procedures for each hospital, by averaging the scores.
Survey "Star" ratings are calculated by averaging the survey scores of all available data for each hospital, individually.
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