Frequencies for first 10,000 rows of prov1620 variable in posclia2008 dataset :

      prior |
intermediar |
   y number |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,921       99.21       99.21
      00030 |         10        0.10       99.31
      00320 |          1        0.01       99.32
      00520 |          3        0.03       99.35
      01030 |         57        0.57       99.92
      03001 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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