Table 3.

Regression of Leukocyte Telomere Length (LTL, bp) in Three Surveys (S1, S2, and S3) on Age, Race, Sex, BMI, and Smoking

	LTL at S1				LTL at S2				LTL at S3
Independent variable	β	p	Partial R2	Model R2	β	p	Partial R2	Model R2	β	p	Partial R2	Model R2
Intercept	7,472.7	<0.001	—	—	7,663.8	<0.001	—	—	7,363.4	<0.001	—	—
Age	−21.8	0.013	2.54	—	−24.0	0.015	2.14	—	−22.1	0.022	2.01	—
Race	641.6	<0.001	12.10	—	628.9	<0.001	10.62	—	553.3	<0.001	9.03	—
BMI	−13.6	0.034	1.00	—	−17.7	0.006	2.05	—	−12.3	0.041	0.97	—
Smoking	177.8	0.049	1.23	16.96	−144.6	0.157	0.64	15.50	−192.1	0.060	1.16	13.55

Notes: A negative regression coefficient denotes a shorter LTL and a positive coefficient denotes a longer LTL. African American = 1, white = 0; smoking yes = 1, no = 0. BMI = body mass index.