Frequencies for first 10,000 rows of proc62d variable in nhamcsopd2011 dataset :

 Proc 6 - 2 |
      digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,992       99.92       99.92
         53 |          1        0.01       99.93
         54 |          1        0.01       99.94
         65 |          1        0.01       99.95
         86 |          1        0.01       99.96
         89 |          3        0.03       99.99
         99 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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