Frequencies for first 10,000 rows of prov0450 variable in posclia2003 dataset :

   prov0450 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,997       99.97       99.97
   20030808 |          1        0.01       99.98
   20030904 |          1        0.01       99.99
   20030910 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016