Table 2.

MZ and DZ variance components, intraclass correlations, and univariate genetic and environmental estimates for loneliness growth parameters and dementia risk.

Random variable	MZW	MZB	DZW	DZB	ICCMZ	ICCDZ	h 2	c 2	e 2
InterceptL	0.18	0.07	0.15	0.05	0.29	0.25	0.08	0.21	0.71
Linear slopeL	0.04	0.002	0.007	0.001	0.33	0.14	0.38	−0.05	0.67
Dementia risk	1.03	0.86	1.00	0.76	0.45	0.43	0.04	0.41	0.55