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Table 1 Variables Specification

From: Expenditure variations analysis using residuals for identifying high health care utilizers in a state Medicaid program

Dependent Variable Per-member per-month expenditure
Independent Variables Disease categories: ICD-9-CM codes grouped into Clinical Classification Software categories (CCS) [17]
  Demographics: age, sex, race, and disabled status
  Geographical information: county of residence
  Health insurance programs and plans: fee-for-service, managed care organization plans