Frequencies for first 10,000 rows of prov4275 variable in posclia2003 dataset :

   prov4275 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,987       99.87       99.87
 01D0678030 |          1        0.01       99.88
 01D0961235 |          1        0.01       99.89
 01D0961241 |          1        0.01       99.90
 01D0961243 |          6        0.06       99.96
 03D0902109 |          1        0.01       99.97
 03D1004084 |          1        0.01       99.98
 23D1004103 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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