Frequencies for first 10,000 rows of plantype variable in plan2017 dataset :

  Plan Type |      Freq.     Percent        Cum.
------------+-----------------------------------
        EPO |      1,120       11.20       11.20
        HMO |      5,371       53.71       64.91
  Indemnity |         42        0.42       65.33
        POS |        816        8.16       73.49
        PPO |      2,651       26.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017