9 results on '"Halladay, Jillian"'
Search Results
2. Identifying patterns of substance use and mental health concerns among adolescents in an outpatient mental health program using latent profile analysis
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Halladay, Jillian, Georgiades, Katholiki, MacKillop, James, Lipman, Ellen, Pires, Paulo, and Duncan, Laura
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- 2024
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3. Differential associations between passive and active forms of screen time and adolescent mood and anxiety disorders
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Kim, Soyeon, Favotto, Lindsay, Halladay, Jillian, Wang, Li, Boyle, Michael H., and Georgiades, Katholiki
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- 2020
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4. The CAMP study: feasibility and clinical correlates of standardized assessments of substance use in a youth psychiatric inpatient sample
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Halladay, Jillian, Horricks, Laurie, Amlung, Michael, MacKillop, James, Munn, Catharine, Nasir, Zil, Woock, Rachel, and Georgiades, Katholiki
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- 2021
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5. Early substance use and the school environment: A multilevel latent class analysis.
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Halladay, Jillian, MacKillop, James, Acuff, Samuel, Amlung, Michael, Munn, Catharine, and Georgiades, Katholiki
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SCHOOL environment , *STRUCTURAL equation modeling , *SAFETY , *LEISURE , *SUBSTANCE abuse , *SCHOOL health services , *CROSS-sectional method , *MIDDLE school students , *REGRESSION analysis , *MENTAL health , *DESCRIPTIVE statistics , *MENTAL depression , *SCHOOL children , *STUDENT attitudes , *EXTERNALIZING behavior , *ODDS ratio - Abstract
Background: Early substance use is associated with increased risks for mental health and substance use problems which are compounded when using several substances (i.e., polysubstance use). A notable increase in substance use occurs when adolescents transition from elementary to secondary schooling. Objective: This study seeks to characterize student and school classes of substance use. Methods: A cross-sectional multilevel latent class analysis and regression was conducted on a representative sample of 19,130 grade 6-8 students from 180 elementary schools in Ontario, Canada to: 1) identify distinct classes of student substance use; 2) identify classes of schools based on student classes; and 3) explore correlates of these classes, including mental health, school climate, belonging, safety, and extracurricular participation. Results: Two student and two school classes were identified. 4.1% of students were assigned to the high probability of early polysubstance use class while the remaining 95.9% were in the low probability class. Students experiencing depressive and externalizing symptoms had higher odds of being in the early polysubstance use class (Odds Ratio [OR]s=1.1-1.25). At the school level, 19% of schools had higher proportions of students endorsing polysubstance use. Perceptions of positive school climate, belonging, and safety increased the odds of students being in the low probability of early polysubstance use student-level class (ORs=0.85-0.93) and lower probability of early polysubstance use school-level class. Associations related to extracurricular participation were largely not statistically significant. Conclusions: Student and school substance use classes may serve as targets for tailored prevention and early interventions. Results support examining school-based interventions targeting school climate, belonging, and safety. [ABSTRACT FROM AUTHOR]
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- 2024
6. CHARACTERIZING THE CO-OCCURRENCE OF SUBSTANCE USE AND MENTAL HEALTH SYMPTOMS AMONG ADOLESCENTS IN GENERAL POPULATION AND CLINICAL SAMPLES
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Halladay, Jillian, Georgiades, Katholiki, and Health Research Methodology
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Mental Health ,Adolescent ,Substance use - Abstract
Background: Despite policy and practice guidelines highlighting the need to identify and treat substance use early and concurrently with other mental health symptoms, efforts remain uncoordinated and guidelines lack specificity. Limited evidence characterizing patterns and correlates of co-occurring substance use and mental health symptoms hinders our ability to effectively address these concerns early during adolescence. This dissertation deepens our understanding of the patterns and correlates of co-occurring substance use and mental health symptoms among adolescents, how to collect relevant data in inpatient settings, and how to rigorously analyze and report findings. Methods: The first paper is a systematic review of 70 cluster-based studies examining patterns of multiple substance use among adolescents. The second examines patterns and correlates of co-occurring substance use and mental health symptoms through multilevel latent profile analysis and multilevel multinomial regression using a large, representative sample of secondary students and schools across Ontario. The third paper is a pilot study examining the feasibility, acceptability, and importance of standardized assessments of substance use and mental health symptoms in an adolescent psychiatric inpatient unit. Results: The substantive findings of this work include: 1) multiple substance use is common; 2) co-occurrence of substance use and mental health symptoms is common, though not universal; 3) substance use may be related to mental health symptom severity, comorbidity, and hospital service use; 4) school climate, belonging, and safety represent important targets for school-based interventions; and 5) adolescent psychiatric inpatient units may represent important contexts for standardized assessments, though more professional training and standardization in assessments and interventions are needed. Methodological recommendations are also presented to improve the collection, analysis, and reporting of similar work in the field. Conclusions: Collectively, this dissertation provides novel, timely, and actionable insight into adolescent substance use patterns, correlates, and potential targets for assessment and intervention efforts. Dissertation Doctor of Philosophy (PhD) This dissertation deepens our understanding of the patterns of co-occurring substance use and mental health concerns among adolescents. First, a review of all existing studies that explore patterns of multiple substance use among adolescents was conducted. Second, patterns of substance use and mental health symptoms were identified in secondary students and schools across Ontario. Third, the feasibility of assessing substance use and mental health symptoms using standardized approaches on an inpatient adolescent psychiatric unit was evaluated. Overall, this work suggests that substance use and mental health concerns commonly co-occur, and that schools and inpatient psychiatric units are important settings for prevention, assessment, and intervention. This work provides actionable next steps to inform assessment, prevention, and intervention efforts designed to address co-occurring substance use and mental health concerns among adolescents.
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- 2022
7. Individual- and school-level patterns of substance use and mental health symptoms in a population-based sample of secondary students: A multilevel latent profile analysis.
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Halladay, Jillian, MacKillop, James, Munn, Catharine, Amlung, Michael, and Georgiades, Katholiki
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MENTAL illness , *SUBSTANCE abuse , *SECONDARY school students , *SCHOOL environment , *MENTAL health , *STATISTICS , *SCHOOLS , *STUDENTS - Abstract
Background: While substance use and mental health symptoms commonly co-occur among adolescents, few population-level studies have examined profiles of co-occurrence to inform tailored prevention and early interventions.Methods: A multilevel latent profile analysis was conducted on a representative sample of 11,994 students in 68 secondary schools to: 1) identify distinct profiles of co-occurring substance use and mental health symptoms; 2) identify types of schools based on student profiles; and 3) explore school correlates of student profiles and school types, including school climate, belonging, and safety.Results: Five student profiles and three school types were identified. Among students, 57.6 % were in a low substance use and mental health profile, 22.5 % were in a high mental health but low substance use profile, 9.7 % were in a heavy drinking and cannabis use profile, 3.7 % were in a heavy drinking and smoking profile, and 6.5 % were in a high substance use and mental health profile. Positive school climate, belonging, and safety increased the odds of students being in the low profile, with belonging yielding larger effects among females. Among schools, 28 % had low, 57 % had moderate, and 15 % had high levels of student substance use and comorbid mental health symptoms. Rural schools were disproportionately represented in higher risk school types.Conclusions: The identified student substance use and mental health symptom profiles can serve as targets for tailored prevention and early interventions. Results support examining school-based interventions targeting school climate, belonging, and safety with potential benefits to both substance use and mental health. [ABSTRACT FROM AUTHOR]- Published
- 2022
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8. Patterns of substance use among adolescents: A systematic review.
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Halladay, Jillian, Woock, R., El-Khechen, H., Munn, C., MacKillop, J., Amlung, M., Ogrodnik, M., Favotto, L., Aryal, K., Noori, A., Kiflen, M., and Georgiades, K.
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META-analysis , *CLUSTER analysis (Statistics) , *TEENAGERS , *ALCOHOL drinking , *MENTAL health , *SUBSTANCE abuse & psychology , *META-synthesis , *SUBSTANCE abuse , *MARIJUANA , *SYSTEMATIC reviews , *RESEARCH funding , *TOBACCO , *HALLUCINOGENIC drugs - Abstract
Purpose: This review characterizes empirically derived patterns of multiple (multi-) substance use among adolescents. A secondary objective was to examine the extent to which mental health symptomatology was included in the empirical analyses examining substance use patterns.Methods: Eligible studies included those that used cluster-based approaches, included the assessment of at least two different substances, and were based on study samples with mean ages between 11 and 18 years. 4665 records were screened including 461 studies for full-text screening.Results: 70 studies were included with common clusters being: low use, single or dual substance use, moderate general multi-use, and high multi-use. The most common patterns of single or multi-substance use were: alcohol only, alcohol with cannabis and/or tobacco, and use of alcohol, tobacco, and cannabis with and without other drugs. Lower socioeconomic status, older age, and male gender were consistent predictors of multi-use clusters. Only 37 % of studies compared differences in levels of mental health across clusters with symptoms consistently associated with a greater likelihood of multi-use. Only 29 % of studies included mental health indicators in cluster-based analyses, with over half identifying distinct mental health and substance use clusters. Fit indices in cluster analyses and measurement properties of substance use were heterogeneous and inconsistently reported across studies.Conclusions: Distinct patterns of substance use were derived but methodological differences prevented direct comparison and reduced capacity to generalize across studies. There is a need to establish standardized methodological approaches to identify robust patterns of substance use to enhance etiological, prognostic, and intervention research. [ABSTRACT FROM AUTHOR]- Published
- 2020
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9. Brief interventions for cannabis use in emerging adults: A systematic review, meta-analysis, and evidence map.
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Halladay, Jillian, Scherer, Justin, MacKillop, James, Woock, Rachel, Petker, Tashia, Linton, Vanessa, and Munn, Catharine
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META-analysis , *MARIJUANA , *ADULTS , *MENTAL health , *MENTAL illness - Abstract
Purpose: This systematic review summarizes and critically appraises the existing literature on brief interventions (BIs) for cannabis use among emerging adults.Methods: Eligible BIs were operationalized as 1-2 sessions focused exclusively on cannabis use for samples with mean ages between 15 and 30. Outcomes related to cannabis use, other substance use, mental health, help-seeking, or functional status were included. Two independent reviewers screened a total of 3638 records, identifying 244 studies for full-text screening. In total, 32 BIs in 26 primary studies with 6318 participants were included.Results: Participants were typically not seeking treatment and using cannabis at least once a month. Most interventions were motivational, single sessions, and delivered in person. Few discussed concurrent psychiatric conditions. Pooling results at 1-3 months post-intervention, BIs compared to passive control slightly reduced symptoms of cannabis use disorder (SMD -0.14 [95% CI -0.26 to -0.01]) and increased the odds of abstinence (OR 1.73 [95% CI 1.13-2.66]). Other outcome results often favored BIs but were not significant. Results of studies comparing types of BIs (k = 8) or BIs to longer interventions (k = 1) are discussed narratively. Quality assessment suggested low to very low-quality evidence.Conclusions: This review indicates that BIs targeting non-treatment seeking emerging adults result in significant reductions in symptoms of cannabis use disorder and an increased likelihood of cannabis abstinence, however evidence is of low quality. [ABSTRACT FROM AUTHOR]- Published
- 2019
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