Frequencies for first 10,000 rows of proc5r variable in nhamcsopd2009 dataset :

  procedure |
       #5 - |
    numeric |
     recode |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,979       99.79       99.79
       4516 |          1        0.01       99.80
       4525 |          1        0.01       99.81
       4946 |          1        0.01       99.82
       8761 |          1        0.01       99.83
       8856 |          1        0.01       99.84
       8915 |          2        0.02       99.86
       8917 |          8        0.08       99.94
       9305 |          1        0.01       99.95
       9308 |          2        0.02       99.97
       9322 |          1        0.01       99.98
       9389 |          1        0.01       99.99
       9390 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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