Frequencies for first 10,000 rows of specialistrequiringreferral variable in plan2018 dataset :

        Specialist Requiring a Referral |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      6,405       64.05       64.05
A referral is needed for all speciali.. |         44        0.44       64.49
                                    All |         31        0.31       64.80
                         All Specialist |         22        0.22       65.02
                        All Specialists |         96        0.96       65.98
All Specialists require a referral wi.. |         44        0.44       66.42
All Specialists require referral with.. |        157        1.57       67.99
All Specialties except Podiatry, Chir.. |         26        0.26       68.25
                All except primary care |         11        0.11       68.36
All except routine OB/GYN & pediatric.. |        120        1.20       69.56
All specialists (IN) may require a re.. |        431        4.31       73.87
All specialists seen in an office set.. |         11        0.11       73.98
Allergy & Immunology, Anesthesiology,.. |        122        1.22       75.20
Allergy, Asthma, Audiology, Cardiovas.. |        228        2.28       77.48
Any specialist in the Engage by Medic.. |         29        0.29       77.77
As a member, you have a primary care .. |        642        6.42       84.19
Cardiology, Cardiovascular (Heart, Bl.. |         19        0.19       84.38
Non-participating specialists and ter.. |         72        0.72       85.10
                 Podiatry, Chiropractic |         40        0.40       85.50
              Refer to plan for details |         19        0.19       85.69
Referral required for certain special.. |         42        0.42       86.11
Referrals are required for some servi.. |        980        9.80       95.91
Referrals are required for:Orthopedis.. |         75        0.75       96.66
Referrals are required for:Orthopedis.. |         36        0.36       97.02
Referrals are required for:Orthopedis.. |         18        0.18       97.20
              Tertiary care specialists |         25        0.25       97.45
The member's PCP will refer to all sp.. |        108        1.08       98.53
You must select a network PCP and not.. |        147        1.47      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 23 May 2018