Frequencies for first 10,000 rows of skltn_rec_sw variable in pos1999 dataset :

   skeleton |
     record |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,250       92.50       92.50
          Y |        750        7.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017