Table 2.

Fit Criteria for Continuous Liability Models Constraining Parameter Estimates Across Sex and Disorder^*

	Criterion
Model	K†	ln(L)	BIC
Slopes, intercepts differ across sex	24	−45449.84	45577.89
Slopes differ, intercepts equal across sex	18	−45646.72	45742.76
Slopes equal, intercepts differ across sex	18	−45465.10	45561.14
Slopes equal across sex and disorder, intercepts differ	13	−45647.14	45716.51
Slopes, intercepts equal across sex	12	−46033.12	46097.15

Abbreviations: BIC, Bayesian information criterion; ln(L), log likelihood.

^*Fit criteria for continuous normal liability models in which various combinations of slope and intercept parameters were constrained to be equal across sex and disorder. In all models except for the fourth model, parameters were allowed to differ across disorder.

^†k indicates number of parameters.