Table 2.

Summary of information for selecting number of latent classes for college student tobacco and nicotine product use (M-PACT, waves 1 through 4; n = 5,482)

No. latent classes	Likelihood-ratio G2	Degrees of freedom	AIC	BIC	ABIC	Log-likelihood	Entropy
Wave 1
2	4055.02	1002	4097.02	4235.82	4169.09	− 21648.05	0.87
3	2682.40	991	2746.40	2957.89	2856.21	− 20961.73	0.78
4	2039.60	980	2125.60	2409.80	2273.16	− 20640.34	0.78
5	1621.83	969	1729.83	2086.73	1915.14	− 20431.45	0.82
6	1326.48	958	1456.48	1886.08	1679.53	− 20283.78	0.86
7	1104.65	947	1256.65	1758.95	1517.44	− 20172.86	0.88
Wave 2
2	2521.50	1002	2563.50	2697.28	2630.55	− 16257.53	0.88
3	1543.64	991	1607.64	1811.49	1709.81	− 15768.60	0.78
4	1174.25	980	1260.25	1534.17	1397.53	− 15583.91	0.77
5	916.60	969	1024.60	1368.60	1197.01	− 15455.08	0.80
6	776.78	958	906.78	1320.85	1114.31	− 15385.17	0.83
7	640.22	947	792.22	1276.36	1034.86	−15316.89	0.85
Wave 3
2	2344.73	1002	2386.73	2520.52	2453.79	− 16342.82	0.87
3	1359.57	991	1423.57	1627.44	1525.76	− 15850.25	0.77
4	995.98	980	1081.98	1355.93	1219.29	− 15668.45	0.79
5	765.31	969	873.31	1217.34	1045.75	− 15553.11	0.83
6	643.47	958	773.47	1187.59	981.05	− 15492.20	0.85
7	507.39	947	659.39	1143.59	902.09	− 15424.16	0.83
Wave 4
2	2181.27	1002	2223.27	2357.62	2290.89	− 16637.18	0.87
3	1245.93	991	1309.93	1514.64	1412.96	− 16169.51	0.75
4	915.26	980	1001.26	1276.34	1319.34	− 16004.17	0.75
5	686.75	969	794.75	1140.20	968.61	− 15889.91	0.77
6	574.69	958	704.69	1120.51	913.97	− 15833.89	0.83
7	476.14	947	628.14	1114.33	872.83	− 15784.61	0.79

A1C Akaike information criterion; BIC Bayesian information criterion; ABIC adjusted BIC using Rissanen’s sample size adjustment. p values not reported because degrees of freedom too large. Italic font indicates the best-fitting model at each wave