Frequencies for first 10,000 rows of icd9prox variable in h170 dataset :

   ICD-9-CM |
   CODE FOR |
PROCEDURE - |
     EDITED |      Freq.     Percent        Cum.
------------+-----------------------------------
         -1 |      9,788       97.88       97.88
         00 |          2        0.02       97.90
         03 |          2        0.02       97.92
         07 |          3        0.03       97.95
         13 |          5        0.05       98.00
         16 |          4        0.04       98.04
         20 |          1        0.01       98.05
         23 |         46        0.46       98.51
         27 |          2        0.02       98.53
         28 |          5        0.05       98.58
         37 |          4        0.04       98.62
         39 |          3        0.03       98.65
         44 |          3        0.03       98.68
         45 |         14        0.14       98.82
         51 |          2        0.02       98.84
         53 |          2        0.02       98.86
         54 |          1        0.01       98.87
         59 |          1        0.01       98.88
         68 |          7        0.07       98.95
         69 |          3        0.03       98.98
         74 |          1        0.01       98.99
         78 |          1        0.01       99.00
         81 |         17        0.17       99.17
         83 |          1        0.01       99.18
         84 |          8        0.08       99.26
         85 |          2        0.02       99.28
         86 |         28        0.28       99.56
         87 |         13        0.13       99.69
         88 |          5        0.05       99.74
         89 |          5        0.05       99.79
         93 |          7        0.07       99.86
         96 |          3        0.03       99.89
         99 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 14 Jul 2017