Table 2.

Association of IGF-1, IGFBP-1, IGFBP-3, and Age With Leukocyte Telomere Length Among 551 Men and Women 65 Years and Older

	β	SE (β)	p Value
Model 1
IGF-1 (per SD)	.06	.04	.09
IGFBP-1 (per SD)	.03	.03	.22
IGFBP-3 (per SD)	−.02	.04	.54
Age (per SD)	−.09	.03	<.01
Model 2
IGF-1 (per SD)	.08	.04	.04
IGFBP-1 (per SD)	.04	.03	.23
IGFBP-3 (per SD)	−.04	.04	.30
Age (per SD)	−.09	.03	<.01

Note: β represents change in leukocyte telomere length associated with 1 SD change in IGF-1, IGFBP-1, or IGFBP-3. Model 1: Adjusted for IGF-1, IGFBP-1, IGFBP-3, age, race, sex, and laboratory batch. Model 2: Adjusted for covariates in Model 1 plus smoking status (ever vs never), body mass index, hypertension, diabetes, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol. IGF-1 = insulin-like growth factor-1; IGFBP = insulin-like growth factor–binding protein.