Frequencies for first 10,000 rows of prov4970 variable in posclia1997 dataset :

   prov4970 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,926       99.26       99.26
          Y |         74        0.74      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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