Table 1.

Study participants’ and nonparticipants’ characteristics.

Characteristics			Participants (n=100)		Nonparticipants (n=152)		P value
Age (years), median (interquartile range)			60 (51-66)		58 (50-66)		.37
Years since donation, median (interquartile range)			10 (8-14)		11 (7-15)		.54
Gender, n (%)							.52
	Male	40 (40.0)		59 (38.8)		—a
	Female	60 (60.0)		93 (61.2)		—
Race, n (%)							.03
	White	93 (93.0)		126 (82.8)		—
	Asian or Pacific Islander	2 (2.0)		6 (3.9)		—
	Black	4 (4.0)		17 (11.1)		—
	Other	1 (1.0)		3 (2.0)		—

^aNot applicable.