Table 1.

Comparison of Demographics of LTS-01 and NHIS Cohorts

Variable	LTS-01 (n = 708)		NHIS (n = 2,124)
	No.	%	No.	%
Age, years
< 50	52	7.3	156	7.3
50-59	140	19.8	420	19.8
60-69	227	32.1	681	32.1
≥ 70	289	40.8	867	40.8
Mean	66.19		66.01
SD	10.63		11.73
Sex
Male	404	57.1	1212	57.1
Female	304	42.9	912	42.9
Race*
White	659	93.1	1965	92.5
Black	19	2.7	57	2.7
Other	29	4.1	102	4.8
Unknown	1	0.1	0	0.0
Hispanic
Yes	27	3.8	217	10.2
No	681	96.2	1907	89.8
Marital status
Yes	537	75.8	1156	54.6
No	171	24.2	961	45.4
Education†
Less than high school	44	6.2	447	21.1
High school graduate	379	53.5	822	38.7
College	154	21.8	467	22.0
Post graduate	131	18.5	388	18.3
Health insurance
Yes	701	99.0	1981	93.3
No	7	1.0	143	6.7
Private insurance
Yes	539	76.1	1412	66.5
No	169	23.9	712	33.5

Abbreviation: NHIS, National Health Interview Survey.

^*Case-control sampling selection is based on only two race categories: black and other.

^†Case-control sampling selection is based on only two education categories: ≤ high school graduate and ≥ college.