Table 4.

Model fitting results—testing the Cholesky structure: Step 1

Model	A	C	E	−2LL	df	LRT	Δ df	P-value	AIC	BIC
1	Ch	Ch	Ch	10,231.865	3,967	–	–	–	–	−188.241
2	0	Ch	Ch	10,252.517	3,988	20.652	21	0.480	−21.348	−205.994
3	Ch	0	Ch	10,239.639	3,988	7.774	21	0.996	−34.226	−212.433
4	0	0	Ch	10,427.073	4,009	195.208	42	<0.001	111.208	−146.794

A additive genetic influences, C shared (common) environmental influences, E nonshared (unique) environmental influences, −2LL −2 log-likelihood, LRT likelihood ratio chi-square test, Δdf change in df, AIC Akaike information criterion, BIC Baysian information criterion, Ch Cholesky structure, 0 variance structure omitted

Models 2–4 are tested against the full Cholesky model (model 1). Most parsimonious (best-fitting) model indicated in boldface type