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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Drug Alcohol Depend. 2008 Jul 3;98(1-2):94–104. doi: 10.1016/j.drugalcdep.2008.04.017

Table 1.

Test statistics for trajectories of nicotine dependence in unconditional and conditional Growth Mixture Models (new cigarette smokers by Wave 3, N=324)

Trajectories Log Likelihood BIC BICa Free parameters LRT( P) Class sizeb
Unconditional
1 −5107 10236 10223 4 NA 324
2 −4858 9763 9738 8 0.00 190,134
3 −4663 9396 9358 12 0.03 144,126,53
4 −4438 8969 8918 16 0.00 152,68,58,46
5 −4373 8856 8796 19 0.00 148,63,46,44,22
Conditional
4 classes with 12 covariatesc −4130 8592 8408 58 149,61,54,47
a

Sample-size adjusted BIC.

b

Respondents assigned to a class on the basis of weighted posterior probabilities.

c

Excludes 13 cases with missing data.