Frequencies for first 10,000 rows of plantype variable in planreport2015 dataset :

                      Plan Type |      Freq.     Percent        Cum.
--------------------------------+-----------------------------------
                                |      4,458       44.58       44.58
                      1876 Cost |        252        2.52       47.10
                            HMO |      2,441       24.41       71.51
                         HMOPOS |        174        1.74       73.25
                      Local PPO |        794        7.94       81.19
Medicare Prescription Drug Plan |        277        2.77       83.96
     Medicare-Medicaid Plan HMO |         19        0.19       84.15
                  National PACE |         76        0.76       84.91
                           PFFS |        238        2.38       87.29
                   Regional PPO |      1,271       12.71      100.00
--------------------------------+-----------------------------------
                          Total |     10,000      100.00

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