Frequencies for first 10,000 rows of prov1620 variable in posclia2006 dataset :

    * prior |
intermediar |
   y number |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,976       99.76       99.76
      00030 |         19        0.19       99.95
      00320 |          1        0.01       99.96
      00520 |          3        0.03       99.99
      01030 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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