Article Figures & Data
Figures
- Figure 1.
An example of 10 practice locations of a urologist who also subspecializes in female urology/pelvic medicine and reconstructive surgery in the Atlanta metropolitan area. Data are based on the Georgia Medicaid Management Information System. The 10 practice sites include 2 cancer treatment centers, 2 hospitals, 3 medical imaging centers, and 3 urologic treatment centers in 10 different locations across 5 counties. HPSA, primary care health professional shortage area (snapshot as of February 8, 2014).
- Figure 2.
Map of change in local spatial accessibility after adjusting for the multiple practice sites.
Tables
- Table 1.
Number of Practice Sites per Physician Based on Registered Physician Provider Data from Georgia Medicaid Management Information System
Number of Physicians Mean Median Percentiles 75th 90th 95th All 20,116 3.3 2 4 7 9 Age (years) <40 4,651 3.6 2 4 7 9 40–49 6,140 3.5 2 4 7 9 50–59 4,514 3.2 2 4 6 9 ≥60 4,155 2.7 2 3 6 7 Unknown 656 3.1 2 3 6 8 Sex Male 13,332 3.4 2 4 7 9 Female 6,136 3 2 4 6 8 Unknown 648 3.1 2 4 6 8 IMG status IMG 4,397 3.2 2 4 7 9 Non-IMG 15,080 3.3 2 4 7 9 Unknown 639 3.1 2 4 6 8 Present employment setting Self-employed solo practice 2,170 2. 1 1 2 4 6 Two-physician practice 572 2.4 2 3 5 6 Group practice 8,694 3.5 2 4 7 9 Medical school 355 3.4 2 4 6 8 State/local 2,408 3.3 2 4 6 8 Federal 113 3.2 2 4 7 9 Other 5,804 3.4 2 4 7 9 Primary specialty Non-primary care 12,982 3.6 2 4 7 10 Primary care 6,495 2.6 2 3 6 7 Family medicine 2,202 2.8 2 3 6 8 General practice 95 2 1 2 4 5 Internal medicine 2,643 2.6 2 3 5 7 Pediatrics 1,555 2.6 2 3 6 7 Unknown 639 3.1 2 4 6 8 Other select specialties Anesthesiology 894 3.5 2 4 7 10 Cardiovascular diseases 582 4.5 4 6 9 10 Diagnostic radiology 716 8.7 4 9 25 41 Endocrinology, diabetes and metabolism 121 1.9 1 2 3 4 Emergency medicine 1,093 2.9 2 4 5 6 Gastroenterology 393 3.3 2 5 7 8 General surgery 614 2.7 2 4 5 7 Nephrology 341 6 4 8 14 20 Neurology 309 2.7 2 4 5 7 Neuroradiology 104 11.7 6 14 34 44 Obstetrics and gynecology 1,077 2.7 2 4 5 7 Orthopedic surgery 524 3.2 2 4 7 8 Otolaryngology 278 4 3 5 7 13 Psychiatry 508 1.8 1 2 3 4 Plastic surgery 137 2 1 2 4 7 Urology 249 3.3 2 5 8 9 Vascular and interventional radiology 109 7.9 5 9 18 30 IMG, international medical graduate.
- Table 2.
Negative Binomial Regression Predicting the Number of Practice Sites per Physician
Estimate SE 95% LCLM 95% UCLM P Value Intercept 1.1833 0.0159 1.1521 1.2144 <.0001 Age (years) <40 0.2884 0.0205 0.2482 0.3287 <.0001 40–49 0.2704 0.0181 0.235 0.3058 <.0001 50–59 0.1591 0.0189 0.122 0.1962 <.0001 ≥60 Reference Sex Male Reference Female −0.1544 0.0139 −0.1816 −0.1273 <.0001 IMG status IMG 0.0268 0.015 −0.0026 0.0562 .0735 Non-IMG Reference Present employment setting Self-employed solo practice −0.4138 0.0225 −0.4579 −0.3696 <.0001 Two-physician practice −0.32 0.0394 −0.3973 −0.2427 <.0001 Group practice Reference Medical school −0.0603 0.0457 −0.1499 0.0293 .1873 State/local −0.0749 0.0196 −0.1132 −0.0366 .0001 Federal −0.1233 0.081 −0.2819 0.0354 .1279 Others −0.0662 0.0162 −0.0979 −0.0345 <.0001 Primary Specialty Non–primary care Reference Primary care −0.2781 0.0138 −0.3052 −0.2511 <.0001 Dispersion 0.409 0.0066 0.3963 0.4221 A total of 19,451 cases were used; 665 cases were excluded because of missing values.
IMG, international medical graduate; LCLM, Lower Confidence Limit; SE, standard error; UCLM, Upper Confidence Limit.
