Frequencies for first 10,000 rows of proc12 variable in nhamcsed1997 dataset :

      other |
  procedure |
 #1 - 2 dgt |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,520       95.20       95.20
         04 |          7        0.07       95.27
         08 |          1        0.01       95.28
         21 |          1        0.01       95.29
         22 |          2        0.02       95.31
         23 |          1        0.01       95.32
         24 |          2        0.02       95.34
         31 |          1        0.01       95.35
         34 |          1        0.01       95.36
         38 |          6        0.06       95.42
         39 |          4        0.04       95.46
         43 |          1        0.01       95.47
         45 |          1        0.01       95.48
         48 |          1        0.01       95.49
         49 |          1        0.01       95.50
         59 |          1        0.01       95.51
         75 |          1        0.01       95.52
         79 |          2        0.02       95.54
         81 |          4        0.04       95.58
         83 |          1        0.01       95.59
         84 |          1        0.01       95.60
         86 |         17        0.17       95.77
         89 |         86        0.86       96.63
         90 |         10        0.10       96.73
         91 |          1        0.01       96.74
         93 |         34        0.34       97.08
         94 |        226        2.26       99.34
         95 |          1        0.01       99.35
         96 |         19        0.19       99.54
         97 |          8        0.08       99.62
         98 |          7        0.07       99.69
         99 |         31        0.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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