Frequencies for first 10,000 rows of specialistrequiringreferral variable in plan2014 dataset :

        Specialist Requiring a Referral |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |      7,987       79.87       79.87
A Physician who is not a Primary Care.. |          4        0.04       79.91
A referral is necessary for any speci.. |         40        0.40       80.31
                                    All |        285        2.85       83.16
All Specialists except OB/GYN or Beha.. |         75        0.75       83.91
                          All but OBGYN |         30        0.30       84.21
                      All except OB/GYN |          3        0.03       84.24
    All except OB/GYN and mental health |         80        0.80       85.04
All providers other than Family Pract.. |         50        0.50       85.54
All providers other than Family Pract.. |        121        1.21       86.75
All providers other than Family Pract.. |         50        0.50       87.25
All providers other than Family Pract.. |        162        1.62       88.87
All specialist providing services req.. |         26        0.26       89.13
All specialty care outside the Merite.. |          5        0.05       89.18
Allergist, Dermatologist, Cardiac Sur.. |          2        0.02       89.20
Allergist, Tranplant Surgeon, Pain Ma.. |         57        0.57       89.77
Allergy & Immunology, Anesthesiology,.. |         44        0.44       90.21
          Any non-Primary Care Provider |         11        0.11       90.32
Any provider outside the members care.. |          6        0.06       90.38
As a member of Unity, you have a prim.. |        166        1.66       92.04
Back Pain Management Program Services.. |         15        0.15       92.19
Cardiology, Cardiovascular (Heart, Bl.. |         12        0.12       92.31
Dermatologist, Pain Management/Anesth.. |        262        2.62       94.93
MEDICAL services do NOT require a ref.. |         96        0.96       95.89
 Non-participating & tertiary providers |          1        0.01       95.90
Pain Management; Plastic Surgeon; Reh.. |         16        0.16       96.06
Pain Management; Plastics; Rehabilita.. |         41        0.41       96.47
Referral required for all physicians .. |         19        0.19       96.66
Referrals are required for all servic.. |         24        0.24       96.90
Referrals are required for all servic.. |          7        0.07       96.97
The member's PCP will refer to all sp.. |        151        1.51       98.48
The member's medical or dental PCP wi.. |         77        0.77       99.25
                                    Yes |         13        0.13       99.38
                       all except OBGYN |         62        0.62      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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