Table 3. Multivariable predictors of induction therapy.

Variable	Odds radio	95% CI	P
Age (per decade)	0.897	0.711–1.134	0.364
Female	0.744	0.489–1.131	0.167
Race (vs. White)
Black	1.274	0.710–2.286	0.416
Other	0.799	0.385–1.660	0.548
Insurance status (vs. private)
Medicare/Medicaid	1.055	0.615–1.808	0.847
Government	0.549	0.064–4.742	0.586
Uninsured	0.823	0.234–2.892	0.761
Unknown	1.402	0.342–5.746	0.639
Charlson comorbidity index (vs. 0)
1	0.440	0.221–0.875	0.019
≥2	0.774	0.262–2.285	0.643
Education above median	2.106	1.233–3.597	0.006
Income above median	0.671	0.400–1.125	0.130
Research/academic facility	1.880	1.203–2.937	0.006
Distance traveled (per 50 miles)	1.064	1.009–1.121	0.023
Invasive tumor (stage IIb–III, vs. stage I–IIa)	3.488	2.120–5.741	<0.001
Tumor size ≥8 cm	3.257	2.139–4.960	<0.001