Frequencies for first 10,000 rows of prov1720 variable in pos1988 dataset :

Record Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          P |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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