Frequencies for first 10,000 rows of proc12d variable in nhamcsed1993 dataset :

      other |
  procedure |
     #1 - 2 |
      digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,377       93.77       93.77
         03 |          1        0.01       93.78
         04 |          1        0.01       93.79
         20 |          1        0.01       93.80
         21 |          1        0.01       93.81
         27 |          1        0.01       93.82
         34 |          3        0.03       93.85
         37 |          1        0.01       93.86
         38 |          5        0.05       93.91
         39 |          1        0.01       93.92
         42 |          1        0.01       93.93
         43 |          1        0.01       93.94
         45 |          2        0.02       93.96
         48 |          1        0.01       93.97
         49 |          2        0.02       93.99
         54 |          1        0.01       94.00
         57 |          1        0.01       94.01
         68 |          1        0.01       94.02
         69 |          2        0.02       94.04
         73 |          1        0.01       94.05
         75 |         21        0.21       94.26
         79 |          1        0.01       94.27
         81 |          1        0.01       94.28
         86 |         20        0.20       94.48
         89 |        269        2.69       97.17
         90 |         63        0.63       97.80
         91 |         11        0.11       97.91
         93 |         92        0.92       98.83
         94 |         12        0.12       98.95
         96 |         12        0.12       99.07
         97 |          6        0.06       99.13
         98 |          3        0.03       99.16
         99 |         84        0.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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