Table 1.

Participants’ characteristics.

Variables	Study Population (n = 2571)	Black Race (n = 644)	Nonblack Race (n = 1927)	P-value
Male	95%	93%	96%	< .01
Marital Status
Never married	22%	24%	21%	.12
Married	45%	35%	49%	< .001
Divorced	30%	39%	26%	< .001
Widowed	2%	2%	2%	.63
Unknown	1%	.5%	1%	.12
Age (years)	59 ± 14	61 ± 23	59 ± 15	< .001
Area deprivation index percentile (mean)	33	33	33	.99
Residual AHI (events/h)	4.7 ± 5.2	4.7 ± 26.3	4.8 ± 5.4	.68
Mask leak (liters/min)	40.8 ± 23.9	41.0 ± 24.0	40.8 ± 24.2	.88
≥ 4-h PAP use for ≥ 70% of days, at 7 days	48%	41%	51%	< .001
Average nightly use (min), at 7 days	232 ± 169	207 ± 163	241 ± 171	< .001
≥ 4-h PAP use for ≥ 70% of days, at 30 days	50%	42%	53%	< .001
Average nightly use (min), at 30 days	242 ± 163	216 ± 135	251 ± 166	< .001