Table 4.

Item-Response Probabilities, Class Proportion, and Transition Probabilities for Selected LTA Model

	Latent Class
	Non-Drinker	WLD	OHED	WHED	Heavy-Drinker
Item Response Probabilities
Typically Drink in the Past 3 Months	0.00	1.00	0.00	1.00	1.00
Weekday (Sun-Wed) Drinking	0.00	0.16	0.00	0.00	0.67
Thursday Drinking	0.00	0.13	0.00	0.29	0.81
Weekend (Fri, Sat) Drinking	0.00	0.98	0.00	1.00	0.96
Peak BAC of ≥ 0.08	0.00	0.13	0.73	0.86	0.89
HED in the Past Month	0.00	0.15	0.80	0.93	0.96
Proportion of Statuses at:
Time 1 (Fall 1st Year of College)	45.9%	15.2%	3.2%	23.7%	12.0%
Time 2 (Fall 2nd Year of College)	39.8%	15.1%	3.3%	25.5%	16.4%
Time 3 (Fall 3rd Year of College)	30.9%	18.9%	3.7%	21.7%	24.7%
Time 4 (Fall of 4th Year of College)	17.1%	29.2%	1.5%	17.4%	34.8%
Transitions from Time 1 (rows) to Time 2 (columns):
Non-Drinker	0.75	0.13	0.03	0.07	0.02
Weekend Light Drinker	0.19	0.45	0.06	0.26	0.05
Occasional Heavy Episodic Drinker	0.26	0.11	0.11	0.20	0.32
Weekend Heavy Episodic Drinker	0.06	0.05	0.02	0.73	0.15
Heavy-Drinker	0.02	0.06	0.02	0.04	0.87
Transitions from Time 2 (rows) to Time 3 (columns):
Non-Drinker	0.69	0.19	0.04	0.05	0.03
Weekend Light Drinker	0.14	0.52	0.02	0.20	0.13
Occasional Heavy Episodic Drinker	0.20	0.24	0.11	0.17	0.23
Weekend Heavy Episodic Drinker	0.02	0.11	0.03	0.60	0.24
Heavy-Drinker	0.02	0.00	0.03	0.05	0.90
Transitions from Time 3 (rows) to Time 4 (columns):
Non-Drinker	0.49	0.41	0.01	0.05	0.04
Weekend Light Drinker	0.07	0.64	0.03	0.11	0.15
Occasional Heavy Episodic Drinker	0.13	0.22	0.10	0.31	0.25
Weekend Heavy Episodic Drinker	0.00	0.05	0.01	0.56	0.38
Heavy-Drinker	0.01	0.10	0.01	0.02	0.87