Table 4.

Effect of age and racial or ethnic group on the odds of receiving guideline-concordant treatment for lung cancer

	Age								Racial or Ethnic Group
	<50 yr	50–54 yr	55–59 yr	60–64 yr	65–69 yr	70–74 yr	75–79 yr	≥80 yr	Non-Hispanic White	Non-Hispanic Black	Non-Hispanic Asian	Hispanic	Other
No. of subjects	22,328	33,619	50,955	62,839	75,298	71,798	58,053	66,922	365,922†	50,256†	9,958†	12,682†	2,995†
No. events	17,710	25,242	36,765	43,702	50,822	44,959	31,977	23,161	229,378†	29,206†	6,344†	7,529†	1,881†
Event risk	0.79	0.75	0.72	0.70	0.67	0.63	0.55	0.35	0.63†	0.58†	0.64†	0.59†	0.63†
Crude OR (95% CI)*	Reference	0.79 (0.75–0.82)	0.68 (0.65–0.70)	0.60 (0.57–0.62)	0.54 (0.52–0.56)	0.44 (0.42–0.45)	0.32 (0.31–0.33)	0.14 (0.13–0.14)	Reference	0.82 (0.81–0.84)	1.04 (1.00–1.09)	0.87 (0.84–0.90)	1.00 (0.93–1.09)
Adjusted OR (95% CI)*	Reference	0.76 (0.73–0.79)	0.63 (0.60–0.65)	0.53 (0.51–0.55)	0.48 (0.47–0.50)	0.39 (0.37–0.40)	0.28 (0.27–0.29)	0.12 (0.12–0.13)	Reference	0.78 (0.76–0.80)	1.09 (1.04–1.15)	0.94 (0.90–0.98)	0.94 (0.86–1.03)

Definition of abbreviations: CI = confidence interval; OR = odds ratio.

^*The crude and adjusted ORs are from the pooled regression model based on all three imputed datasets. Adjusted ORs are adjusted for sex, insurance status, Charlson comorbidity score, treating facility type, hospital volume, histology, and clinical stage at diagnosis. Variance inflation factors were ≤2 for all covariates, indicating that multicollinearity was limited.

^†The number of subjects, number of events, and event risks for racial or ethnic group are based on the mean values across the three imputed datasets.