Table IV.

Predictors of Toxicity among Elderly Stage IIIB Lung Cancer Patients

Predictors	OR(95% CI)	P-value
Age  70–74  75–59  ≥80	Ref 1.0(0.8–1.3) 1.1(0.9–1.4)	Ref 0.88 0.51
Female	0.9(0.7–1.1)	0.25
Married	1.0(0.8–1.2)	0.68
Race  White  Black  Hispanic  Other	Ref 1.7(1.2–2.3) 0.8(0.5–1.4) 1.0(0.7–1.6)	Ref 0.003 0.46 0.95
Income Quartile  First Quartile  Second Quartile  Third Quartile  Fourth Quartile	Ref 1.1(0.9–1.4) 1.0(0.7–1.3) 1.0(0.8–1.3)	Ref 0.44 0.75 0.92
Comorbidity Score  <1  1–2  >2	Ref 1.1(0.9–1.4) 1.1(0.9–1.4)	Ref 0.46 0.30
Histology  Adenocarcinoma  Squamous  Large cell  Other	Ref 1.1(0.9–1.4) 1.1(0.8–1.6) 0.8(0.5–1.1)	Ref 0.30 0.49 0.18
Tumor Site  Upper  Middle  Lower  Other	Ref 1.3(0.9–2.1) 1.1(0.9–1.4) 0.8(0.7–1.1)	Ref 0.20 0.50 0.19
Treatment  Untreated  RT Alone  Chemotherapy Alone  CRT	Ref 2.8(2.0–3.9) 4.0(2.9–5.6) 6.0(4.4–8.1)	Ref <0.0001 <0.0001 <0.0001

OR: odds ratio; RT: radiation therapy; CRT: chemoradiation therapy; CI: confidence interval