Table 1.

Baseline sample characteristics by group

	White (n = 148)	Black (n = 48)
Age (M ± SD)	45.7 ± 14.2	43.0 ± 12.9
Sex (female)	73.6%	93.8%
2019 household income
Very low (<15k)	6.8%	10.4 %
Low (<35k)	24.3%	16.7%
Middle (<75k)	33.8%	52.1%
High (≥75k)	35.1%	20.8%
Pre-COVID ISI (M ± SD)	9.2 ± 6.2	10.8 ± 5.6
Received dCBT-I	51.0%	40.0%
Perceived discrimination	0.39 ± 0.67	1.50 ± 1.01

No group differences were detected except for sex and perceived discrimination.

dCBT-I, digital Cognitive Behavioral Therapy for Insomnia.