Frequencies for first 10,000 rows of plantype variable in planreport2019 dataset :

                      Plan Type |      Freq.     Percent        Cum.
--------------------------------+-----------------------------------
                                |      4,361       43.61       43.61
                            HMO |      2,977       29.77       73.38
                         HMOPOS |        335        3.35       76.73
                      Local PPO |      1,012       10.12       86.85
Medicare Prescription Drug Plan |        238        2.38       89.23
     Medicare-Medicaid Plan HMO |         17        0.17       89.40
                  National PACE |        112        1.12       90.52
                           PFFS |        146        1.46       91.98
                   Regional PPO |        802        8.02      100.00
--------------------------------+-----------------------------------
                          Total |     10,000      100.00

by Jean Roth , jroth@nber.org ,