Table 3.
Unadjusted and Multivariable-Adjusted Associations Between Patient Characteristics and OAA Receipt (N = 2,792)
| Parameter | Unadjusted RR (95%CI) | Multivariable-adjusted RR (95 %CI) |
| Race/ethnicity (ref. White Non-Hispanic) | ||
| Black Non-Hispanic | 0.78 (0.60–1.00) | 0.88 (0.68–1.15) |
| Hispanic | 1.19 (1.02–1.40) | 0.99 (0.83–1.19) |
| Other | 1.32 (1.10–1.58) | 1.16 (0.96–1.39) |
| Age at metastatic diagnosis (ref. 66–70) | ||
| 71–75 | 0.97 (0.85–1.10) | 0.92 (0.81–1.04) |
| 76–80 | 0.86 (0.75–0.99) | 0.90 (0.78–1.03) |
| 81+ | 0.44 (0.37–0.53) | 0.50 (0.42–0.60) |
| Male sex | 1.23 (1.10–1.38) | 1.10 (0.99–1.23) |
| Stage at initial SEER Diagnosis (ref. Stage IV) | ||
| I | 0.89 (0.73–1.08) | 0.80 (0.65–0.98) |
| II | 1.01 (0.74–1.37) | 0.85 (0.63–1.14) |
| III | 1.36 (1.19–1.57) | 1.18 (1.01–1.37) |
| Unknown | 1.20 (0.90–1.59) | 1.21 (0.92–1.59) |
| Clear cell histology | 1.75 (1.45–2.10) | 1.65 (1.38–1.98) |
| U.S. Region of residence (ref. West) | ||
| Midwest | 0.84 (0.70–1.00) | 0.92 (0.77–1.10) |
| Other | 0.86 (0.69–1.06) | 0.98 (0.79–1.22) |
| Northeast | 0.75 (0.64–0.87) | 0.87 (0.74–1.01) |
| South | 0.78 (0.66–0.91) | 0.83 (0.70–0.98) |
| Married | 1.35 (1.21–1.50) | 1.13 (1.01–1.27) |
| Lives in metropolitan area | 1.06 (0.93–1.22) | 1.08 (0.94–1.24) |
| Dual enrollment | 1.00 (0.89–1.12) | 1.03 (0.90–1.17) |
| Residential zip code-level characteristics | ||
| Highest quartile: black race | 1.12 (0.99–1.26) | 1.13 (0.98–1.30) |
| Highest quartile: adults 25 + with less than high school education | 0.84 (0.74–0.96) | 0.95 (0.82–1.10) |
| Highest quartile: households living below poverty level | 0.93 (0.82–1.06) | 0.95 (0.82–1.09) |
| Nephrectomy (ref. No nephrectomy) | ||
| Partial | 1.09 (0.74–1.61) | 1.06 (0.72–1.55) |
| Radical | 1.24 (1.05–1.46) | 1.05 (0.88–1.25) |
| Myocardial infarction | 0.93 (0.78–1.12) | 0.97 (0.81–1.16) |
| Hypertension | 1.21 (1.02–1.44) | 1.32 (1.11–1.57) |
| Peripheral vascular disease | 0.86 (0.76–0.98) | 0.99 (0.87–1.13) |
| Congestive heart failure | 0.85 (0.74–0.98) | 0.93 (0.81–1.07) |
| Dementia | 0.31 (0.18–0.52) | 0.44 (0.26–0.74) |
| Cardiovascular disease | 0.80 (0.70–0.92) | 0.88 (0.77–1.01) |
| Chronic obstructive pulmonary disease | 0.93 (0.72–1.20) | 0.99 (0.79–1.25) |
| Cardiovascular disease | 0.99 (0.73–1.35) | 1.09 (0.81–1.46) |
| Rheumatologic disease | 1.09 (0.95–1.26) | 1.08 (0.94–1.24) |
| Peptic ulcer disease | 0.93 (0.82–1.04) | 0.89 (0.79–1.01) |
| Mild liver disease | 1.07 (0.96–1.19) | 0.96 (0.85–1.08) |
| End stage renal disease | 1.12 (0.98–1.29) | 1.12 (0.96–1.30) |
| Diabetes with complications | 0.64 (0.41–1.01) | 0.74 (0.48–1.15) |
| Year of diagnosis (ref 2007) | ||
| 2008 | 0.89 (0.68–1.16) | 0.82 (0.63–1.06) |
| 2009 | 0.73 (0.55–0.98) | 0.79 (0.59–1.04) |
| 2010 | 0.86 (0.66–1.13) | 0.87 (0.67–1.13) |
| 2011 | 1.08 (0.85–1.37) | 1.07 (0.86–1.35) |
| 2012 | 1.14 (0.90–1.44) | 1.17 (0.93–1.46) |
| 2013 | 1.25 (1.00–1.56) | 1.26 (1.02–1.56) |
| 2014 | 1.01 (0.80–1.28) | 1.02 (0.81–1.28) |
| 2015 | 1.21 (0.96–1.53) | 1.20 (0.96–1.49) |