Frequencies for first 10,000 rows of plantype variable in ma2014 dataset :

                      Plan Type |      Freq.     Percent        Cum.
--------------------------------+-----------------------------------
                                |      6,390       63.90       63.90
                      1876 Cost |        252        2.52       66.42
                            HMO |      1,659       16.59       83.01
                         HMOPOS |         83        0.83       83.84
                      Local PPO |        501        5.01       88.85
Medicare Prescription Drug Plan |        248        2.48       91.33
     Medicare-Medicaid Plan HMO |         19        0.19       91.52
                  National PACE |         68        0.68       92.20
                           PFFS |        159        1.59       93.79
                   Regional PPO |        621        6.21      100.00
--------------------------------+-----------------------------------
                          Total |     10,000      100.00

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