Frequencies for first 10,000 rows of typeofmedicarehealthplan variable in planreport2011 dataset :

       Type of |
      Medicare |
   Health Plan |      Freq.     Percent        Cum.
---------------+-----------------------------------
               |      5,482       54.82       54.82
     Local HMO |      1,243       12.43       67.25
   Local HMO * |        376        3.76       71.01
     Local PPO |        857        8.57       79.58
   Local PPO * |          2        0.02       79.60
          PFFS |        460        4.60       84.20
        PFFS * |        337        3.37       87.57
  Regional PPO |        706        7.06       94.63
Regional PPO * |        537        5.37      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016