Table 3.

Sequential models of DSM-IV criteria for Whites, African Americans, and Hispanics among new tobacco users by Wave 5 (N=350)

		Whites (N=101)	African Americans (N=91)	Hispanics (N=158)
Models	df	${\chi }_{\mathit{LR}}^2$	${\chi }_{\mathit{LR}}^2$	${\chi }_{\mathit{LR}}^2$
Model 0 (independence model)	60	141.86	135.56	179.92
Models 1- Tolerance or impaired control before withdrawal
1A. Tolerance or impaired control before withdrawal	16	7.80	11.11
1B. Tolerance before withdrawal	25	17.47	16.43	11.85
1C. Impaired control before withdrawal	25	16.45	22.07	12.00
1D. Tolerance and impaired control before withdrawal	34	26.13	26.32	15.33
Models 2- Tolerance or impaired control before attempts to quit
2A. Tolerance or impaired control before attempts to quit	16	9.73	2.31	7.68
2B. Tolerance before attempts to quit	25	18.16	9.40	33.09
2C. Impaired control before attempts to quit	25	13.93	9.23	9.16
2D. Tolerance and impaired control before attempts to quit	34	22.92	15.82	36.04
Models 3- Combined best fitting models of Models 1 and 2
3A. (1D+2D) Tolerance & impaired control before   withdrawal and attempts to quit	47	37.37	33.95
3B. (1D +2C) Tolerance & impaired control before   withdrawal, impaired control before attempts to quit	44			23.94
Models 4- Modifications of Model 3A for whites and African Americans and Model 3B for Hispanics in the order between withdrawal and attempts to quit
4D. Model 3A + withdrawal before attempts to quit	51	39.91	42.86
4E. Model 3A + attempts to quit before withdrawal	51	41.24	37.98
4C. Model 3B + attempts to quit before withdrawal	48			29.22
Models 6- Modifications of Model 4D for whites, Model 4E for African Americans, and Model 4C for Hispanics in the order between tolerance and impaired control
6D. Model 4D + tolerance before impaired control	55	49.81
6E. Model 4D + impaired control before tolerance	55	59.62
6F. Model 4E + tolerance before impaired control	55		41.63
6G. Model 4E + impaired control before tolerance	55		51.75
6C. Model 4C + impaired control before tolerance	52			43.01