Frequencies for first 10,000 rows of priog13 variable in h84 dataset :

 PID COV BY |
  OTH GROUP |
       PLAN |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         67        0.67        0.67
          2 |      9,933       99.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Feb 2018