Frequencies for first 10,000 rows of othimg12 variable in nhamcsopd1995 dataset :

      other |
  imaging - |
   icd-9-cm |
procedure - |
       2dgt |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,904       99.04       99.04
         68 |          1        0.01       99.05
         75 |          4        0.04       99.09
         89 |         30        0.30       99.39
         90 |          2        0.02       99.41
         91 |         38        0.38       99.79
         92 |          2        0.02       99.81
         95 |         12        0.12       99.93
         99 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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