Table 2. Network Measures by Market and Specialty Combined and After Stratifying by Patient Race.
| Market | Specialty | PCP degree: alla | Black, No. (%)b | White, No. (%)b | Specialist degreea | Black, No. (%)a | White, No. (%)a | PCP strengthc | Black, No. (%)a | White, No. (%)a |
|---|---|---|---|---|---|---|---|---|---|---|
| Chicago, Illinois | All | 7.3 | 5.4 (75) | 5.1 (72) | 180.0 | 108.6 (59) | 103.0 (58) | 2.0 | 1.7 (86) | 1.8 (93) |
| Memphis, Tennessee | All | 13.5 | 7.5 (56) | 11.2 (83) | 317.1 | 159.2 (48) | 245.3 (77) | 3.5 | 2.4 (70) | 3.1 (88) |
| Baton Rouge, Louisiana | All | 10.7 | 6.1 (58) | 9.0 (84) | 229.3 | 117.6 (50) | 185.3 (80) | 3.2 | 2.1 (67) | 2.7 (86) |
| Norfolk, Virginia | All | 13.7 | 6.8 (50) | 11.8 (86) | 355.3 | 166.2 (45) | 295.7 (83) | 3.2 | 2.0 (64) | 2.8 (88) |
| Lafayette, Louisiana | All | 8.3 | 4.1 (51) | 7.3 (89) | 216.4 | 100.6 (46) | 193.4 (89) | 4.4 | 2.5 (58) | 3.7 (86) |
| Tallahassee, Florida | All | 6.3 | 3.6 (59) | 5.8 (91) | 156.2 | 77.9 (49) | 137.8 (88) | 5.3 | 2.6 (51) | 4.6 (86) |
| Manhattan, New York | All | 9.4 | 3.4 (38) | 8.8 (94) | 189.7 | 44.9 (23) | 164.7 (87) | 2.0 | 1.5 (77) | 2.0 (97) |
| Jacksonville, Florida | All | 14.3 | 5.9 (41) | 12.8 (89) | 319.7 | 110.3 (34) | 281.9 (88) | 3.4 | 1.9 (57) | 3.2 (94) |
| Miami, Florida | All | 10.5 | 4.4 (43) | 9.4 (90) | 258.0 | 72.5 (27) | 223.3 (87) | 2.1 | 1.5 (71) | 2.0 (95) |
| San Bernardino, California | All | 5.6 | 2.5 (47) | 5.2 (92) | 157.4 | 43.8 (27) | 142.5 (91) | 2.7 | 1.5 (56) | 2.6 (95) |
| Buffalo, New York | All | 8.7 | 3.1 (38) | 8.0 (93) | 207.5 | 45.7 (21) | 188.2 (91) | 2.4 | 1.5 (62) | 2.3 (97) |
| Huntsville, Alabama | All | 10.4 | 3.5 (36) | 9.8 (95) | 268.8 | 80.3 (28) | 252.9 (94) | 3.1 | 1.5 (50) | 2.9 (95) |
| All | Cardiology | 20.0 | 8.8 (45) | 17.5 (87) | 329.9 | 134.8 (40) | 281.3 (85) | 4.1 | 2.3 (58) | 3.7 (91) |
| All | Pulmonary | 8.1 | 4.4 (56) | 7.2 (89) | 325.4 | 142.3 (44) | 277.3 (85) | 4.1 | 2.3 (57) | 3.7 (91) |
| All | Gastroenterology | 7.9 | 4.0 (51) | 7.0 (89) | 239.5 | 95.8 (39) | 201.9 (84) | 3.1 | 1.9 (65) | 2.8 (90) |
| All | Orthopedics | 8.7 | 3.3 (39) | 7.8 (91) | 137.5 | 38.5 (28) | 119.5 (87) | 2.1 | 1.4 (68) | 2.0 (96) |
| All | General surgery | 6.8 | 3.7 (55) | 5.7 (85) | 141.7 | 57.0 (41) | 114.3 (80) | 2.6 | 1.7 (69) | 2.3 (91) |
| All | Neurology | 7.9 | 3.9 (51) | 6.9 (87) | 253.7 | 95.4 (37) | 212.6 (84) | 2.7 | 1.8 (67) | 2.5 (91) |
Abbreviation: PCP, primary care physician.
a
Degree is the number of ties between PCPs and specialists. All represents the mean across physicians in each of the 6 specialties across all included markets.
b
Black and White refer to the percentage of the overall measure present in the networks constructed using Black or White patients only.
c
Strength is the number of shared patients.