Frequencies for first 10,000 rows of plantype variable in plan2016 dataset :

  Plan Type |      Freq.     Percent        Cum.
------------+-----------------------------------
        EPO |      1,370       13.70       13.70
        HMO |      3,530       35.30       49.00
  Indemnity |         20        0.20       49.20
        POS |      1,222       12.22       61.42
        PPO |      3,858       38.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Oct 2016