Table III.

BIC Values Obtained when Initially Determining the Optimal Numbers of Groups

Two	Three	Four	Five
1 1 −3918	1 1 1 −3355	1 1 1 1 −3050	1 1 1 1 1 −2956
2 2 −3870	2 2 −3306	2 2 2 2 −3023	2 2 2 2 2 −2938
3 3 −3837	3 3 3 −3253	3 3 3 3 −3007	3 3 3 3 3 −2927
4 4 −3834	4 4 4 −3248	4 4 4 4 −3009	4 4 4 4 4 −3017
5 5 −3836	5 5 5 −3272	5 5 5 5 −3499	5 5 5 5 5 −2962

This table depicts Bayesian Information Criteria (BIC) values for the initial model obtained with various groups and polynomial degrees with a zero inflated Poisson link function. Scale for Suicidal Ideation scores was the outcome variable. Since this was an initial exploratory analysis for the purposes of choosing the optimal number of groups, none of the demographic variables nor site were included as covariates; however MADRS scores (after subtracting out the suicide subscale) were still included as a covariate and time was included an independent variable. N= 468 in all cases. Each pair of values represent the polynomial degree of each group of the model (top value) and the associated BIC value (bottom value).