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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: Addict Behav. 2020 Feb 17;106:106358. doi: 10.1016/j.addbeh.2020.106358

Table 3.

Intraclass correlations for all outcome variables

Intraclass Correlations
Stress Negative Affect Craving
Level 3 (Person-Level) ICC .52 .52 .45
Level 2 (Day-Level) ICC .12 .22 .13

Note: For craving, a binary outcome, the level-1 variance was fixed to π2/3 following the logistic latent variable approach specified by Snijders and Bosker (1999).