Table 5.

Generalized linear models with friend relationship status, support, and strain predicting epigenetic aging.

	Horvath			Hannum			PheraoAge			GrimAge			DunedinPoAm38
Model	β	b(SE)	p	β	b(SE)	p	β	b(SE)	p	β	b(SE)	p	β	b(SE)	p
Friend status (has friends)
Model 1	−0.005	−0.167 (0.409)	0.68	−0.009	−0.270 (0.312)	0.39	−0.013	0.453 (0.562)	0.42	−0.056	−1.624 (0.344)	<0.001*	−0.060	−0.019 (0.006)	0.005*
Model 2	−0.002	−0.066 (0.408)	0.87	−0.004	−0.110 (0.294)	0.71	−0.008	0.273 (0.594)	0.65	−0.028	−0.814 (0.312)	0.01	−0.016	−0.005 (0.006)	0.44
Friend support
Model 1	−0.014	−0.180 (0.170)	0.29	0.002	0.030 (0.137)	0.83	−0.006	−0.077 (0.204)	0.71	−0.033	−0.379 (0.105)	<0.001*	−0.045	−0.005 (0.002)	0.02*
Model 2	−0.013	−0.163 (0.173)	0.35	0.007	0.090 (0.145)	034	0.002	0.024 (0.215)	0.91	−0.023	−0.264 (0.090)	0.006*	−0.030	−0.004 (0.002)	0.09
Friend strain
Model 1	0.002	0.039 (0.306)	0.90	0.009	0.163 (0.229)	0.48	−0.016	0.328 (0.347)	0.35	0.025	0.432 (0.204)	0.04	0.071	0.013 (0.004)	0.003*
Model 2	−0.002	−0.029 (0.301)	0.92	0.002	0.036 (0.214)	0.87	−0.025	−0.511 (0.330)	0.13	−0.005	−0.088 (0.165)	0.60	0.024	0.004 (0.00−1)	0.21

Note, b = unstandardized coefficient. Bold font denotes statistically significant associations. Asterisks indicate statistically significant associations following false discovery rate correction. Model 1 adjusts for chronological age, biological sex, and self-identified race/ethnicity. Model 2 adjusts for Model 1 variables as well as educational attainment, both’ mass index category, smoking status, and alcohol use. The sample size for the friend status models was n = 3,702 (Model l) and n = 3,627 (Model 2), for the friend support models is n = 3,475, and for the friend strain models is n = 3,473.