Frequencies for first 10,000 rows of othimg12 variable in namcs1995 dataset :

      other |
  imaging - |
   icd-9-cm |
procedure - |
       2dgt |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,934       99.34       99.34
         88 |          2        0.02       99.36
         89 |         34        0.34       99.70
         90 |          8        0.08       99.78
         91 |         16        0.16       99.94
         93 |          2        0.02       99.96
         95 |          1        0.01       99.97
         96 |          1        0.01       99.98
         99 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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