How Early Is Early? Early Initiation of Risk Behaviors among Inner City Adolescents and Its Impact on Later Behavioral Trajectories John M. Bolland Bradley E. Lian
Support 1.NICHD (HD 30060) 2.CSAT/SAMHSA (TI 13340) 3.NIDA (DA ) 4.CDC (CE ) 5.Mobile, Alabama Housing Board 6.City of Mobile, Alabama 7.City of Prichard, Alabama
Mobile Youth Survey –Begun in 1998; 11 waves of data –Low income, African American neighborhoods 1990 poverty rate = 73% 1990 median household income = $5,190 –Multiple cohort, longitudinal study of adolescent risk –Adolescents aged
MYS Data N = 7,085 18,360 total interviews 1,774 – 2,635 annual interviews 1,187 respondents with 5+ waves of data Response rate = Followup rate =.82
The Mobile Youth Survey: Findings Prevalence × Age Risk BehaviorRelative RiskAgePeriod Data Alcohol consumption lifetime Add Health Alcohol consumption days YRBS Marijuana use lifetime Add Health Marijuana use days YRBS Sexual intercourse lifetime Add Health Sexual intercourse days YRBS
The Mobile Youth Survey: Findings Prevalence × Age Risk BehaviorRelative RiskAgePeriod Data Alcohol consumption lifetime Add Health Alcohol consumption days YRBS Marijuana use lifetime Add Health Marijuana use days YRBS Sexual intercourse lifetime Add Health Sexual intercourse days YRBS Weapon carrying days YRBS Gun carrying days YRBS Pulling a weapon lifetime Add Health Weapon use lifetime Add Health
MYS Data: Developmental and Behavioral Trajectories Y ij = [β 00 + β 10 age ij ] + [μ 0j + μ 1j age ij + r ij ] Where μ 0j ≈ N(0, τ ), r ij ≈ N(0, σ 2 )
MYS Data: Developmental and Behavioral Trajectories Y ij = [β 00 + β 10 age ij ] + [μ 0j + μ 1j age ij + r ij ] Y ij = [β 00 + β 10 age ij + β 01 ic ij + β 11 (ic ij × age ij )] + [μ 0j + μ 1j age ij + r ij ] Where μ 0j ≈ N(0, τ ), r ij ≈ N(0, σ 2 )
Alcohol Use b se Intercept Age (lin) Age (quad) Gender Age (lin) × Gender Age (quad) × Gender
Alcohol Use: Frequency and Recency
Household Instability: Mother Mother Figure Birth Mother67.0% % Grandmother12.0% % No One 1.4% - 3.2% Annual Change25.0% – 34.8%
Household Instability: Father Father Figure Biological Father44.8% % Stepfather14.4% % Grandfather 6.7% - 8.5% No One10.9% % Annual Change43.9% – 49.8%
Alcohol Use b se No father figure (NFF) Early initiation (EI) Age (lin) × NFF Age (quad) × NFF Age (lin) × EI Age (quad) × EI Age (lin) × NFF × EI Age (quad) × NFF × EI
Alcohol Use: Frequency and Recency
Alcohol Use b se b se No father figure (NFF) Early initiation (EI) Age (lin) × NFF Age (quad) × NFF Age (lin) × EI Age (quad) × EI Age (lin) × NFF × EI Age (quad) × NFF × EI NFF*.10.07
Alcohol Use b se Biological father (BFF) Early initiation (EI) Age (lin) × BFF Age (quad) × BFF Age (lin) × EI Age (quad) × EI Age (lin) × BFF × EI Age (quad) × BFF × EI.08.03
Alcohol Use: Frequency and Recency
Alcohol Use b se Biological father (BFF) Early initiation (EI) Age (lin) × BFF Age (quad) × BFF Age (lin) × EI Age (quad) × EI Age (lin) × BFF × EI Age (quad) × BFF × EI BFF*
Marijuana Use b se Intercept Age (lin) Age (quad) Gender Age (lin) × Gender Age (quad) × Gender
Marijuana Use: Frequency and Recency
Marijuana Use b se No father figure (NFF) Early initiation (EI) Age (lin) × NFF Age (quad) × NFF Age (lin) × EI Age (quad) × EI Age (lin) × NFF × EI Age (quad) × NFF × EI
Marijuana Use: Frequency and Recency
Marijuana Use b se b se No father figure (NFF) Early initiation (EI) Age (lin) × NFF Age (quad) × NFF Age (lin) × EI Age (quad) × EI Age (lin) × NFF × EI Age (quad) × NFF × EI NFF*.13.06
Marijuana Use b se Biological father (BFF) Early initiation (EI) Age (lin) × BFF Age (quad) × BFF Age (lin) × EI Age (quad) × EI Age (lin) × BFF × EI Age (quad) × BFF × EI
Marijuana Use: Frequency and Recency
Marijuana Use b se b se Biological father (BFF) Early initiation (EI) Age (lin) × BFF Age (quad) × BFF Age (lin) × EI Age (quad) × EI Age (lin) × BFF × EI Age (quad) × BFF × EI BFF*
Marijuana Use: Frequency and Recency
Fighting b se Intercept Age (lin) Age (quad) Gender Age (lin) × Gender Age (quad) × Gender
Fighting: Frequency and Recency
Weapon Carrying b se Intercept Age (lin) Age (quad) Gender Age (lin) × Gender Age (quad) × Gender
Weapon Carrying: Frequency and Recency
Weapon Carrying b se No father figure (NFF) Early initiation (EI) Age (lin) × NFF Age (quad) × NFF Age (lin) × EI Age (quad) × EI Age (lin) × NFF × EI Age (quad) × NFF × EI.18.09
Carrying a Weapon: Frequency and Recency
Weapon Carrying b se Biological father (BFF) Early initiation (EA) Age (lin) × BFF Age (quad) × BFF Age (lin) × EA Age (quad) × EA Age (lin) × BFF × EA Age (quad) × BFF × EA
Carrying a Weapon: Frequency and Recency
Weapon Brandishment b se Intercept Age (lin) Gender Age (lin) × Gender
Weapon Brandishment: Frequency and Recency
Weapon Brandishment b se No father figure (NFF) Early initiation (EI) Age (lin) × NFF Age (quad) × NFF Age (lin) × EI Age (quad) × EI Age (lin) × NFF × EI Age (quad) × NFF × EI.11.06
Brandishing a Weapon: Frequency and Recency
Weapon Carrying b se Biological father (BFF) Early initiation (EI) Age (lin) × BFF Age (quad) × BFF Age (lin) × EI Age (quad) × EI Age (lin) × BFF × EI Age (quad) × BFF × EI
Brandishing a Weapon: Frequency and Recency
Weapon Use b se Intercept Age (lin) Age (quad) Gender Age (lin) × Gender Age (quad) × Gender
Weapon Use: Frequency and Recency
Weapon Use b se No father figure (NFF) Early initiation (EI) Age (lin) × NFF Age (quad) × NFF Age (lin) × EI Age (quad) × EI Age (lin) × NFF × EI Age (quad) × NFF × EI
Using a Weapon: Frequency and Recency
Weapon Use b se Biological father (BFF) Early initiation (EI) Age (lin) × BFF Age (quad) × BFF Age (lin) × EI Age (quad) × EI Age (lin) × BFF × EI Age (quad) × BFF × EI
Using a Weapon: Frequency and Recency
The Challenges of Conditional Growth Curve Modeling 2,724 MYS respondents who were 9,10, or 11 at time of first observation; and indicated whether they had used alcohol 334 interviewed when they were father figure + no early use 108 father figure + early use 22 no father figure + no early use 11 no father figure + early use