TY - JOUR
T1 - Predicting trajectories of substance use during emerging adulthood
T2 - Exploring the benefits of group-based trajectory modeling for zero-inflated outcomes
AU - Cook, Stephanie Hazel
AU - Wood, Erica Paige
AU - Scott, Marc
AU - Pierce, Kristyn Amber
AU - Kapadia, Farzana
AU - Halkitis, Perry N.
N1 - Publisher Copyright:
© 2020 Cises.
PY - 2020/9
Y1 - 2020/9
N2 - The application of group-based trajectory analysis with a zero-inflation specification to understand adaptations in alcohol and marijuana use among sexual minorities during the emerging adulthood period is underutilized. We propose a series of four steps in the application of group-based trajectory analysis for outcomes that follow a zero-inflated distribution. In addition, using a longitudinal cohort study of emerging adult sexual minority men (n = 597) we provide an example of how to obtain group-based trajectory profiles of alcohol and marijuana use among emerging adult sexual minority men with a zeroinflated specification. In addition, we examined racial/ethnic differences in trajectory profiles. Findings suggest that there were five distinct alcohol and marijuana use trajectories that were reliably predicted by racial/ethnic identity for alcohol but not marijuana utilizing the zero-inflated specification. A summary of findings and concluding remarks related to the utility of this modeling technique are presented.
AB - The application of group-based trajectory analysis with a zero-inflation specification to understand adaptations in alcohol and marijuana use among sexual minorities during the emerging adulthood period is underutilized. We propose a series of four steps in the application of group-based trajectory analysis for outcomes that follow a zero-inflated distribution. In addition, using a longitudinal cohort study of emerging adult sexual minority men (n = 597) we provide an example of how to obtain group-based trajectory profiles of alcohol and marijuana use among emerging adult sexual minority men with a zeroinflated specification. In addition, we examined racial/ethnic differences in trajectory profiles. Findings suggest that there were five distinct alcohol and marijuana use trajectories that were reliably predicted by racial/ethnic identity for alcohol but not marijuana utilizing the zero-inflated specification. A summary of findings and concluding remarks related to the utility of this modeling technique are presented.
KW - Group-based trajectory analysis
KW - Racial/ethnic disparities
KW - Sexual minority youth
KW - Substance use
KW - Zero-inflated modeling
UR - http://www.scopus.com/inward/record.url?scp=85095877662&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85095877662&partnerID=8YFLogxK
U2 - 10.4473/TPM27.3.1
DO - 10.4473/TPM27.3.1
M3 - Article
AN - SCOPUS:85095877662
SN - 1972-6325
VL - 27
SP - 291
EP - 311
JO - TPM - Testing, Psychometrics, Methodology in Applied Psychology
JF - TPM - Testing, Psychometrics, Methodology in Applied Psychology
IS - 3
ER -