Table 1.

Demographics

	Full Sample (n=20,916)		Whites (n=17,574)		Blacks (n=3,342)
Continuous Variables	M	SD	M	SD	M	SD	t1
Age	77.1	7.0	77.3	7.0	75.9	7.0	10.94***
MHI (in thousands)	49.7	24.1	52.4	24.2	35.5	17.3	47.55***
Categorical Variables	%	N	%	N	%	N	x2
Sex
Male	52	10,988	54	9,432	47	1,556	56.95***
Female	48	9,928	46	8,142	53	1,786
Medicaid Beneficiary
Yes	15	3,089	11	1,966	34	1,123	1120.89***
No	85	17,287	89	15,608	66	2,219
Urban/Rural Status
Metro	83	17,378	82	14,484	87	2,894	52.74***
Urban	15	3,087	15	2,667	13	420
Rural	2	444	2	418	1	26
Performance Status
Normal	80	16,643	81	14,189	73	2,454	92.29***
Poor	20	4,273	19	2,454	27	888
CCI
0	51	10,619	53	9,261	41	1,358	223.98***
1	23	4,806	23	4,013	24	793
2	12	2,595	12	2,073	16	522
3+	14	2,896	13	2,227	20	669
SCT Utilization2
Yes	7	782	8	700	4	82	34.37***
No	93	10,487	92	8,506	96	1,981
BTZ Utilization3
Yes	35	5,672	36	4,882	30	790	39.10***
No	65	10,365	64	8,525	70	1,840

Note: BTZ= Bortezomib; CCI= Charlson Comorbidity Index; MHI= Median Household Income; SCT = Stem Cell Transplant;

^*= p < 0.01;

^**= p < 0.001;

^***= p < 0.0001.

¹T and P values for comparison between whites and blacks

²Limited to only those ≤77 years old at MM diagnosis (n= 11,269)

³Limited to only those diagnosed 2003–2011 (n= 16,037)