Frequencies for first 10,000 rows of proc32d variable in nhamcsopd2010 dataset :

procedure 3 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,733       97.33       97.33
         04 |          1        0.01       97.34
         14 |          1        0.01       97.35
         22 |          1        0.01       97.36
         37 |          2        0.02       97.38
         38 |          3        0.03       97.41
         42 |          1        0.01       97.42
         44 |          2        0.02       97.44
         45 |          8        0.08       97.52
         48 |          3        0.03       97.55
         57 |          1        0.01       97.56
         59 |          1        0.01       97.57
         60 |          2        0.02       97.59
         69 |          3        0.03       97.62
         70 |          1        0.01       97.63
         73 |          2        0.02       97.65
         75 |          5        0.05       97.70
         80 |          6        0.06       97.76
         81 |          1        0.01       97.77
         86 |          2        0.02       97.79
         88 |          4        0.04       97.83
         89 |        130        1.30       99.13
         90 |          1        0.01       99.14
         91 |          7        0.07       99.21
         92 |          1        0.01       99.22
         93 |         23        0.23       99.45
         94 |          2        0.02       99.47
         95 |         39        0.39       99.86
         96 |          1        0.01       99.87
         99 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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