Frequencies for first 10,000 rows of othimg12 variable in namcs1996 dataset :

      other |
  imaging - |
   icd-9-cm |
procedure - |
       2dgt |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,893       98.93       98.93
         60 |          1        0.01       98.94
         88 |          2        0.02       98.96
         89 |         43        0.43       99.39
         90 |         10        0.10       99.49
         91 |         21        0.21       99.70
         92 |          2        0.02       99.72
         95 |         22        0.22       99.94
         99 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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