Table 2.

Identification of optimal group number

		2-group model	3-group model	4-group model	5-group model
BIC*		−2188.33	−2147.10	−2129.47	−2133.02
BLRT* n- vs. (n−1)-group model
2×Loglikelihood difference		325.892	97.633	36.045	4.529
Approximate P-Value		0.000	0.0000	0.0000	0.339
LO-MENDELL-RUBIN adjusted LRT* test n- vs. (n−1)-group model
Value		309.972	92.863	43.082	34.284
P		0.0000	0.0579	0.2265	0.6177

^*BIC: Bayesian Information criterion; BLRT: bootstrapped parametric likelihood ratio test; LRT: likelihood ratio test