Frequencies for first 10,000 rows of skltn_rec_sw variable in pos2009 dataset :

   SKELETON |
     RECORD |
  INDICATOR |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,343       83.43       83.43
          N |        576        5.76       89.19
          Y |      1,081       10.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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