Between- and within-person predictors of missingness in intensive longitudinal data among people in outpatient treatment for opioid use disorder.

ABSTRACT: Missing observations in intensive longitudinal data may be attributable to between-person differences and within-person states, either of which may systematically bias assessment of associations between predictors and outcomes. We examined this issue in intensive longitudinal data from people receiving medication for opioid use disorder (n = 306), each of whom was asked to provide an end-of-day (EOD) report via smartphone every night for 8 weeks, along with thrice-daily randomly prompted reports (person-moments = 39,321). We examined whether missing EOD reports were associated with mood, stress, craving, and substance use, estimated both as within-person changes (in random-prompt entries) and between-person characteristics (means across random-prompt entries). Between-person charact

SUBMITTER: Stull SW 

PROVIDER: S-EPMC12915691 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature