Commentary on Stull et al.: Considering person-specific heterogeneity when modeling time-varying trends.

Piccirillo, Marilyn L; Foster, Katherine T · Addiction · 2023

editorial · Level V

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Abstract

TVEM represents an important statistical method for modeling non-linear, dynamic processes. However, TVEM models the <i>average</i>-level process for the focal effect. As addiction- and recovery-related processes demonstrate person-specific heterogeneity, we encourage researchers to model non-parametric <i>and</i> non-ergodic change to advance our understanding of how, when, and for whom change occurs.