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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: Alcohol Clin Exp Res. 2010 Sep 22;34(12):2116–2125. doi: 10.1111/j.1530-0277.2010.01308.x

Table 3.

Class proportions and latent transition probabilities, based on latent Markov model.

Week 16 Week 26 Week 52
Infreq. Occas. Freq. Infreq. Occas. Freq. Infreq.
(n≈831)		 Occas.
(n≈239)		 Freq.
(n≈226)
Week 0
Week 10
Week 26
Infreq.
(n≈1006)		 0.84 0.13 0.03 Infreq.
(n≈887)		 0.85 0.11 0.04 Infreq.
(n≈822)		 0.90 0.09 0.01
Occas.
(n≈162)		 0.18 0.58 0.24 Occas.
(n≈238)		 0.17 0.59 0.24 Occas.
(n≈256)		 0.30 0.54 0.16
Freq.
(n≈128)		 0.08 0.13 0.79 Freq.
(n≈171)		 0.11 0.13 0.76 Freq.
(n≈218)		 0.08 0.15 0.77

Note. Infreq.=infrequent heavy drinking class; Occas.=occasional heavy drinking class; Freq.=Frequent heavy drinking class