Frequencies for first 10,000 rows of othther variable in nhamcsopd2000 dataset :

  all other |
therapeutic |
/preventive |
   services |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,086       90.86       90.86
          1 |        914        9.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016