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Table 1 Claims Source for All ED Episodes 1991-2005 (n = 18695)

From: Defining emergency department episodes by severity and intensity: A 15-year study of Medicare beneficiaries

  Number of institutional outpatient claims
Number of carrier claims Count 0 1 2 3 or more Total
  0 0 1241 18 4 1263
  1 11151 5432 120 6 16709
  2 397 183 10 0 590
  3 or more 99 33 1 0 133
  Total 11647 6889 149 10 18695