Table 2.

Latent class analysis model fit of IC impairment

No. of Classes	Degrees of Freedom	AIC	BIC	aBIC	BLR Test
2	50	765.75	876.83	835.52	-
3	43	388.15	559.06	495.50	0.01
4	36	186.19	416.91	331.11	0.01
5	29	125.68	416.21	308.16	0.01

*The model became unstable with the 6-class model; AIC = Akaike information criterion; BIC = Bayesian information criterion; aBIC = Adjusted Bayesian information criterion; BLR = bootstrapped log-likelihood ratio