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

                      Plan Type |      Freq.     Percent        Cum.
--------------------------------+-----------------------------------
                                |      4,524       45.24       45.24
                            HMO |      2,140       21.40       66.64
                         HMOPOS |        125        1.25       67.89
                      Local PPO |        994        9.94       77.83
Medicare Prescription Drug Plan |        579        5.79       83.62
                  National PACE |         32        0.32       83.94
                           PFFS |        495        4.95       88.89
                   Regional PPO |      1,111       11.11      100.00
--------------------------------+-----------------------------------
                          Total |     10,000      100.00

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