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Longitudinal Data Across Multiple Stages Of Life. Substantive Applications Hanno Petras, Ph.D. Johns Hopkins University. Collaborators. Hendricks Brown, USF Howard Chilcoat, JHU Nick Ialongo, JHU Shep Kellam, AIR & JHU Phil Leaf, JHU Bengt Muthen, UCLA
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Longitudinal Data Across Multiple Stages Of Life Substantive Applications Hanno Petras, Ph.D. Johns Hopkins University
Collaborators • Hendricks Brown, USF • Howard Chilcoat, JHU • Nick Ialongo, JHU • Shep Kellam, AIR & JHU • Phil Leaf, JHU • Bengt Muthen, UCLA • Prevention Science Methodology Workgroup
Paper 1: Developmental Antecedents and Malleability of Antisocial Personality Disorder - Long-term Effects of a Universal Classroom Based Preventive Intervention
Developmental Relationship between Aggressive Behavior and Antisocial Personality Disorder (ASPD) in One Cohort of Control Boys (N=138) BIC=2516.86 Entropy=0.861 # of Iterations=93 Elementary School Middle School Prevalence of ASPD 69.7% 35.0% F=Fall S=Spring 10.7%
Methodological Topics in Growth Modeling • Impact of particular time points (e.g., in middle school) for the prediction of distal outcome, over and above class membership (u on Ys) • Individual intervention impact over and above class membership • Atypical individual development --Outliers • Modeling of Subgroup variation within Growth Modeling (e.g., in control conditions, cohorts)
Paper 2: Specificity/Sensitivity of Predicting Developments in Aggression Leading to Violent Juvenile Arrest
Developmental Relationship between Aggressive Behavior and Violent Juvenile Arrest in Two Cohorts of Control Boys (N=598) BIC=7343.99 Entropy=0.789 # of Iterations=149 Sensitivity Prevalence of Arrest 34.4% 30.0% 5.4% F=Fall S=Spring
Methodological Topics in Predicting Developmental Trajectories • Sensitivity (false positives) versus Specificity (false negatives) • Treatment of Missing Data • Not only prediction of development, but also quality of prediction regarding distal outcomes
Time-to-Event Analysis • Interval Censoring, in addition to left and right censoring (i.e., Missing Data problem) • Analysis of Survival leading to Growth development (e.g. timing of school suspension may lead to different trajectories in aggression) • Bivariate Survival analysis (Time to first drug use and time to first depressive episode in one model)