Research Report
Copyright ©2014 Baishideng Publishing Group Co.
World J Obstet Gynecol. May 10, 2014; 3(2): 71-77
Published online May 10, 2014. doi: 10.5317/wjog.v3.i2.71
Table 1 United States county characteristics by distance to gynecologic oncologist practice location
Distance to closest gynecologic oncologist
0 to <25 miles>25 to < 50 miles> 50 miles
No. of US counties5368901683
County designationn (%)n (%)n (%)
Metropolitan486 (90.7)345 (38.8)255 (15.2)
Non-metropolitan42 (7.8)424 (47.6)901 (53.5)
Rural8 (1.5)121 (13.6)527 (31.3)
Socioeconomic characteristicsn (%)n (%)n (%)
Income inequality ratio1
Low (< 3.84)26 (4.9)226 (25.4)773 (45.9)
Moderate (> 3.84 to < 6.71)71 (13.3)323 (36.3)664 (39.4)
High (> 6.71)438 (81.9)341 (38.3)246 (14.6)
Percent of county below poverty level
Low (< 11%)295 (55.0)292 (32.8)452 (26.9)
Moderate (> 11% to < 15.2%)163 (30.4)307 (34.5)577 (34.4)
High (> 15.2%)78 (14.6)291 (32.7)654 (38.9)
Percent of county uninsured
Low (< 13.3%)257 (47.9)333 (37.4)437 (26.0)
Moderate (> 13.3% to < 18.5%)181 (33.8)321 (36.1)563 (33.4)
High (> 18.5%)98 (18.3)236 (25.5)683 (40.6)
Physician characteristics (per 100000 women)n (%)n (%)n (%)
Primary care physicians
01 (0.2)15 (1.7)115 (6.8)
Low (< 105.79)120 (22.4)347 (39.0)515 (30.6)
Moderate (> 105.79 to 169.97)182 (34.0)327 (36.7)505 (30.0)
High (> 169.97)233 (43.5)201 (22.6)548 (32.6)
General surgeons
051 (9.5)223 (25.1)666 (39.6)
Low (< 11.72)135 (25.2)273 (30.7)307 (18.2)
Moderate (> 11.72 to < 20.47)138 (25.7)249 (28.0)352 (20.9)
High (> 20.47)212 (39.6)145 (16.3)358 (21.3)
OB/GYNs
065 (12.1)327 (37.7)936 (55.6)
Low (< 11.27)94 (17.5)235 (26.4)259 (15.4)
Moderate (> 11.27 to < 20.53)139 (25.9)199 (22.4)268 (15.9)
High (> 20.53)238 (44.4)129 (14.5)220 (13.1)
Population Characteristics% (SE)% (SE)% (SE)
Non-Hispanic white77.6 (17.7)82.5 (16.9)81.4 (20.1)
Non-Hispanic black12.1 (14.1)10.0 (14.8)7.0 (14.6)
Non-Hispanic Asian/Pacific Islander2.4 (3.5)0.8 (1.3)0.6 (0.8)
Non-Hispanic other21.6 (1.2)2.0 (4.8)3.2 (8.1)
Hispanic6.3 (8.8)4.7 (8.7)7.7 (14.6)
Ages 0 to 4460.8 (5.2)58.0 (5.3)55.7 (6.6)
Ages 45 to 5414.7 (1.3)14.4 (1.5)14.4 (1.6)
Ages 55 to 6410.5 (1.6)11.3 (1.8)11.5 (2.0)
Ages 65 to 746.8 (1.7)7.9 (1.6)8.7 (1.9)
Ages 75+7.3 (2.2)8.4 (2.3)9.8 (3.1)
Table 2 Ovarian cancer incidence and mortality by distance to gynecologic oncologist practice location
Distance to closest gynecologic oncologist
0 to <25 miles25 to < 50 miles50 miles
Mortality
N499707974
Rate (SE)10.09 (3.14)12.02 (4.73)13.57 (6.43)
Incidence
N5198551418
Rate (SE)14.21 (4.23)15.11 (6.54)16.31 (8.51)
Table 3 Adjusted odds of high ovarian cancer mortality by gynecologic oncologist practice location
County level variableOdds ratioOdds ratio 95%CIP-value
Distance to GO
≥ 25 to < 50 miles vs < 25 miles1.40(1.04, 1.89)0.029
≥ 50 miles vs < 25 miles1.59(1.18, 2.15)0.003
General surgeon per avg. pop.
1st Tertile: (< 11.72) vs 00.35(0.24, 0.50)< 0.001
2nd Tertile: (> 11.72 to < 20.47) vs 00.35(0.24, 0.51)< 0.001
3rd Tertile: (> 20.47) vs 00.32(0.22, 0.48)< 0.001
Incidence Rate1.15(1.12, 1.18)< 0.001
% Population Age 45 to 541.25(1.15, 1.37)< 0.001
% Population Age 75+1.39(1.31, 1.48)< 0.001
% Population non-Hispanic Asian/Pacific Islander0.88(0.80, 0.96)0.004
% Population Hispanic0.99(0.97, 1.00)0.027