Table 2. Standardized regression coefficients of smoking on LTL.

	Model 1			Model 2
	β	SE	P	β	SE	P
Age	-0.266	0.029	<0.001	-0.260	0.029	<0.001
AA race	0.310	0.028	<0.001	0.325	0.029	<0.001
Female sex	0.054	0.028	0.058	0.053	0.028	0.063
Alcohol drinking	-0.044	0.028	0.125	-0.052	0.029	0.068
BMI	---	---	---	-0.080	0.029	0.006
Smoking	-0.061	0.029	0.034	-0.072	0.029	0.012
	Model 4			Model 5
	β	SE	P	β	SE	P
Age	-0.267	0.028	<0.001	-0.260	0.028	<0.001
AA race	0.307	0.028	<0.001	0.321	0.029	<0.001
Female sex	0.052	0.028	0.069	0.050	0.028	0.077
Alcohol drinking	-0.045	0.028	0.115	-0.054	0.028	0.058
BMI	---	---	---	-0.085	0.029	0.004
Pack-years	-0.082	0.028	0.004	-0.094	0.029	0.001

Model 3: Effect of smoking on BMI: β= -0.143, SE=0.030, P<0.001

Model 6: Effect of pack-years on BMI: β= -0.150, SE=0.030, P<0.001

β=standardized regression coefficients; SE=standard error; LTL=leukocyte telomere length; AA=African Americans; BMI=body mass index