Table 3.

Unstandardized parameter estimates (95% confidence intervals) from the best fitting bivariate biometric model from table 2 (model number 5) of depressive symptoms

Parameter	Men			Women
	Estimate	95% CI		Estimate	95% CI
		Lower	Upper		Lower	Upper
Additive genetic
aCIRS	6.00	5.14	6.84	5.18	4.53	5.81
acommon	0.28	0.22	0.32	0.26	0.18	0.32
aunique	3.96	3.12	4.74	5.41	4.63	6.16
βaCIRSc	0.16	0.01	0.33	0.01	−0.04	0.07
βa40u	−0.06	−0.10	0.01	−0.01	−0.06	0.03
βa75u	0.20	−0.08	0.45	0.16	−0.03	0.34
βaCIRSu	0.03	−0.02	0.08	0.02	−0.02	0.07
Non-shared Environmental
eCIRS	7.90	7.35	8.46	7.12	6.69	7.55
ecommon	0.14	0.10	0.17	0.15	0.12	0.19
eunique	6.80	6.30	7.32	7.59	7.10	8.10
βeCIRSc	0.09	0.05	0.13	0.11	0.07	0.15
βe40u	−0.04	−0.01	−0.07	−0.03	−0.06	−0.01
βe75u	0.16	0.01	0.33	0.03	−0.09	0.16
βeCIRSu	0.10	0.07	0.13	0.06	0.03	0.09

Notes: a_CIRS represents the additive genetic genetic path estimate to the additive genetic I-CIRS factor at age 75; a_common = the common pathway estimate of the additive genetic contributions of I-CIRS on depressive symptoms; a_unique = the estimated variance unique to depressive symptoms at age 75; β_aCIRSc = the estimate of the moderating effect of I-CIRS on the additive genetic covariance. β_a40u = the estimate of the linear slope on the additive genetic variance unique to depressive symptoms for participants aged 40 to 75; β_a75u = the estimate of the linear slope on the additive genetic variance unique to depressive symptoms for participants aged 75 to 90. β_aCIRSu = the estimate of the moderating effect of I-CIRS on the additive genetic variance unique to depressive symptoms. The parameters denoted with an e represent corresponding parameter estimates for the non-shared environmental contributions.