Frequencies for first 10,000 rows of plantype variable in plan2014 dataset :

  Plan Type |      Freq.     Percent        Cum.
------------+-----------------------------------
        EPO |        794        7.94        7.94
        HMO |      4,053       40.53       48.47
  Indemnity |         38        0.38       48.85
        POS |        817        8.17       57.02
        PPO |      4,298       42.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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