Frequencies for first 10,000 rows of othpr33d variable in nhamcsopd2006 dataset :

procedure 3 |
  - 3 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,989       99.89       99.89
        457 |          1        0.01       99.90
        546 |          1        0.01       99.91
        567 |          1        0.01       99.92
        571 |          1        0.01       99.93
        584 |          2        0.02       99.95
        815 |          1        0.01       99.96
        818 |          1        0.01       99.97
        863 |          1        0.01       99.98
        866 |          1        0.01       99.99
        962 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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