Frequencies for first 10,000 rows of specialistrequiringreferral variable in plan2017 dataset :

        Specialist Requiring a Referral |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      6,251       62.51       62.51
                         All Specialist |         28        0.28       62.79
                        All Specialists |        129        1.29       64.08
All Specialists require a referral wi.. |         44        0.44       64.52
All Specialists require referral with.. |        285        2.85       67.37
                All except primary care |         11        0.11       67.48
All providers other than Family Pract.. |         94        0.94       68.42
All providers other than Family Pract.. |         89        0.89       69.31
All providers other than Family Pract.. |         72        0.72       70.03
Allergy & Immunology, Anesthesiology,.. |         84        0.84       70.87
As a member of Unity, you have a prim.. |        560        5.60       76.47
Cardiology, Cardiovascular (Heart, Bl.. |         15        0.15       76.62
Non-participating specialists and ter.. |        133        1.33       77.95
Referrals are required for some servi.. |        494        4.94       82.89
Referrals are required for some servi.. |      1,170       11.70       94.59
Referrals are required for:  Orthoped.. |        114        1.14       95.73
Referrals are required for:  Orthoped.. |         96        0.96       96.69
              Tertiary care specialists |         97        0.97       97.66
The member's PCP will refer to all sp.. |        126        1.26       98.92
You must select a network PCP and not.. |        108        1.08      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017