Frequencies for first 10,000 rows of proc32d variable in nhamcsopd1994 dataset :

 service #3 |
  procedure |
   code - 2 |
     digits |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,626       96.26       96.26
         12 |          2        0.02       96.28
         16 |          5        0.05       96.33
         44 |          1        0.01       96.34
         45 |          2        0.02       96.36
         57 |          3        0.03       96.39
         59 |          1        0.01       96.40
         66 |          2        0.02       96.42
         69 |          1        0.01       96.43
         70 |          2        0.02       96.45
         75 |         14        0.14       96.59
         85 |          1        0.01       96.60
         86 |          3        0.03       96.63
         87 |         40        0.40       97.03
         88 |         41        0.41       97.44
         89 |         41        0.41       97.85
         90 |          8        0.08       97.93
         91 |        105        1.05       98.98
         92 |          6        0.06       99.04
         93 |         26        0.26       99.30
         94 |         32        0.32       99.62
         95 |         16        0.16       99.78
         96 |          1        0.01       99.79
         97 |          1        0.01       99.80
         99 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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