Table 1.

Descriptive characteristics of the entire analytic sample^*,^† and by race/sex groups.

Characteristic	Overall	Black Women	Black Men	White Women	White Men
No. of participants	4,924	1,415	1,117	1,258	1,134
Testing center, %
Birmingham	23	25	26	20	23
Chicago	22	22	21	22	24
Minnesota	27	21	26	31	32
Oakland	28	33	28	27	21
Age, years‡	24.8 (3.7)	24.4 (3.9)	24.2 (3.7)	25.4 (3.4)	25.4 (3.4)
Maximum Education by Year 20, %
Associate’s Degree or more	32	20	18	48	46
High school or less	68	80	82	52	54
Difficulty paying for basics, %
Not very hard	65	61	59	68	73
≥Somewhat hard	35	39	41	32	27
Marital status, %
Married or cohabitating	22	20	18	28	23
Other	78	80	82	72	77
Meeting Physical Activity Guidelines, %
Yes	59	37	72	58	73
No	41	63	28	42	27
Alcohol use, %
Yes	86	78	85	91	92
No	14	22	15	9.2	7.7
Smoking status, %
Never smoked	57	60	54	53	58
former	13	8.4	9.1	20	16
current	30	31	37	27	26
Body mass index, kg/m2‡	24.5 (5.0)	25.8 (6.4)	24.5 (4.2)	23.0 (4.3)	24.3 (3.5)
Self-rated health, %
≥Good	90	84	89	94	94
≤Fair	10.0	16	11	6.0	6.4

^*Data are from the baseline exam unless otherwise noted.

^†Baseline data are not represented for 94 participants (1.9% of analytic sample) who did not complete the graded exercise test at the baseline exam but did complete the protocol at the Year 7 and/or Year 20 follow-up exams.

^‡Mean (standard deviation)