Table 2.

Risk of COVID-19 infection in BMT survivors vs non-BMT comparison group

Risk factors	Univariate analysis			Multivariable analysis
	HR	HR (95% CI)	P value	HR	aHR 95% CI	P value
BMT survivors vsnon-BMTcomparison group
Non-BMT comparison group	REF			REF
BMT survivors	0.88	0.63-1.23	.45	0.93	0.65-1.33	.68
Age at study participation
<65 y	REF
≥65 y	0.58	0.42-0.80	.001
Race/ethnicity
Non-Hispanic White	REF		.049∗	REF		.047∗
African American	1.41	0.78- 2.55	.25	1.68	0.92- 3.08	.09
Hispanic	1.34	0.85- 2.11	.20	1.30	0.81- 2.09	.27
Other	0.34	0.12-0.91	.03	0.38	0.14-1.02	.06
Sex
Female	REF
Male	1.02	0.76-1.39	.88
Annual household income
≥$75 000	REF			REF
<$75 000	1.32	0.96- 1.80	.09	1.38	1.00-1.91	.05
Education
≥College	REF		.08∗
High school to some college	1.29	0.92-1.81	.14
<High school	1.58	1.04-2.40	.03
Have insurance
No	REF
Yes	1.00	0.37-2.71	.99
Chronic health conditions
Grade 0-2	REF			REF
Grade 3-4	1.21	0.89-1.64	.22	1.43	1.03-1.98	.03
Contact with COVID–19 test positive individuals (family members/ friends/at work)
No	REF			REF
Yes	5.7	3.75-8.66	<.001	5.32	3.47-8.16	<.001
Always wear mask
No	REF			REF
Yes	0.48	0.34-0.69	<.001	0.55	0.38-0.80	.002
Always stay 6 feet away
No	REF
Yes	0.73	0.54-1.00	.05
Always wash hands
No	REF
Yes	1.02	0.76-1.39	.88
Employment
Retired	REF		.002∗	REF		.09∗
Employed	1.83	1.27-2.63	.001	1.35	0.92- 1.98	.13
Not employed	2.03	1.28-3.23	.003	1.69	1.05-2.71	.03

REF, reference group.

^∗P value for whole group.