Frequencies for first 10,000 rows of npp_type_cd variable in pos1994 dataset :

    type of |
non-partici |
     pating |
   provider |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,905       99.05       99.05
          E |         31        0.31       99.36
          F |         64        0.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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