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Table 2 Multinomial logistic regression predicting treatment in a low vs. high immunotherapy prescribing hospital (accounting for the middle quintiles)

From: Adoption of immunotherapy in the community for patients diagnosed with metastatic melanoma

 Relative risk ratio95% Confidence Intervalp-value
Age
  ≤ 30Ref.  
 41–501.040.20–5.320.964
 51–600.840.17–4.180.834
 61–701.280.25–6.490.766
 71–801.190.25–5.680.831
 81–902.240.46–10.90.318
Gender
 maleRef.  
 female0.860.62–1.180.346
Race
 WhiteRef.  
 Black0.360.11–1.140.081
 Other/unknown1.970.71–5.460.193
Year of Diagnosis
 2011Ref.  
 20121.280.82–2.010.287
 20131.080.69–1.700.728
 20141.400.89–2.220.147
 20151.831.17–2.870.008
Charlson Deyo Index
 0Ref.  
 11.110.73–1.710.623
 21.300.50–2.210.888
  > =31.930.77–4.870.162
Primary Site
 Head and NeckRef.  
 trunk1.410.74–2.710.294
 extremities1.300.72–2.330.379
 overlapping1.250.60–2.630.550
Histology
 Melanoma, NOSRef.  
 nodular0.780.44–1.390.396
 Lentigo0.350.04–3.440.369
 superficial0.870.38–2.000.749
 Acral0.470.07–3.010.424
 other0.910.43–1.930.798
Metastatic stage
 M1, NOSRef.  
 M1a0.420.15–1.170.097
 M1b, lung0.390.14–1.100.075
 M1c, visceral0.220.08–0.620.004
 Brain involvement0.440.15–1.230.116
Ulceration
 No ulcerationRef.  
 ulceration0.880.54–1.460.631
 unknown0.630.35–1.150.132
Breslow (continuous)1.001.00–1.000.141
Insurance
 PrivateRef.  
 Medicare1.130.74–1.710.576
 Medicaid2.101.12–3.920.020
 Other1.110.34–3.630.850
 No insurance2.441.28–4.670.007
 unknown0.280.07–1.160.080
Income*
  ≥ $63,000Ref.  
 $48,999–$62,9991.250.65–2.400.509
 $38,000–$47,9990.930.36–2.410.887
  < $38,0001.710.57–5.140.339
 unknown0.290.02–3.540.333
Education*,**
  ≥ 21%Ref.  
 13%-20,9%1.140.55–2.370.730
 7–12,9%0.970.40–2.330.943
  < 7%0.610.21–1.760.360
 unknown6.100.38–98.550.203
Distance
  < 12.5miRef.  
 12.5-50mi0.580.38–0.880.011
  ≥ 50mi0.140.07–0.30< 0.001
 unknown0.380.07–2.230.285
Facility Location
 NortheastRef.  
 South5.060.98–26.030.052
 Midwest0.970.15–6.060.973
 West1.810.35–9.300.475
Facilitytype
 AcademicRef.  
 CCCP5.181.69–15.880.004
 INCP6.601.06–41.140.043
County
 MetroRef.  
 Urban2.581.34–4.960.005
 Rural1.930.32–11.740.476
 unknown1.250.45–3.450.671
  1. Abbreviations: NOS = not otherwise specified, mi = miles; CCCP = comprehensive community cancer program; INCP = integrated network cancer program
  2. Significant p-values in italic
  3. *ZIP-code level variable
  4. **Percentage of residents in home county with no high school degree from 2012 American County Survey Data