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Table 1 Descriptive statistics of the H(A), H(B), and UR entropic measures between ICD-9-CM Vol.3 and ICD-10-PCS

From: Entropic measures of complexity in a new medical coding system

  Forward mapping Backward mapping
  From ICD-9-CM Vol.3 to ICD-10-PCS From ICD-10-PCS to ICD-9-CM Vol.3
  H(A) H(B) UR H(A) H(B) UR
Count 3672 3672 3672 71924 71924 71924
Mean 2.76 3.03 2.74 0.09 0.25 0.13
Std 1.92 2.16 1.85 0.32 0.84 0.40
Min 0.00 0.00 0.00 0.00 0.00 0.00
25% 1.00 1.58 1.44 0.00 0.00 0.00
50% 2.58 2.58 2.58 0.00 0.00 0.00
75% 4.00 4.39 3.91 0.00 0.00 0.00
Max 10.95 13.53 10.22 3.46 7.50 3.46