Frequencies for first 10,000 rows of digsc12d variable in nhamcsopd2005 dataset :

 diagnostic |
 service #1 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      8,386       83.86       83.86
         03 |          4        0.04       83.90
         06 |          1        0.01       83.91
         13 |          1        0.01       83.92
         42 |          1        0.01       83.93
         57 |          3        0.03       83.96
         75 |         84        0.84       84.80
         79 |          1        0.01       84.81
         81 |          2        0.02       84.83
         83 |          3        0.03       84.86
         84 |          1        0.01       84.87
         86 |         54        0.54       85.41
         87 |          2        0.02       85.43
         89 |        749        7.49       92.92
         90 |        102        1.02       93.94
         91 |        311        3.11       97.05
         92 |          4        0.04       97.09
         93 |         30        0.30       97.39
         94 |         20        0.20       97.59
         95 |        176        1.76       99.35
         96 |          4        0.04       99.39
         99 |         61        0.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016