Table 3.

Likelihood ratio tests for selected models presented in Table 2

Models	Alternative hypothesis	DF	P
2 vs. 3	h2 differs between age groups (not controlling for household)	1	0.03
4 vs. 6	h2 differs between age groups (when c2child = c2adult)	1	0.04
4 vs. 5	c2 differs between age groups (when h2child = h2adult)	1	0.3
5 vs. 7	h2 differs between age groups (when c2child ¹ c2adult)	1	0.04
6 vs. 7	c2 differs between age groups (when h2child ¹ h2adult)	1	0.3

Comparison of models in which h² and/or c² are equal for both age groups or allowed to differ between adults and children.

DF = degrees of freedom.