Ongoing research projects

Ongoing research projects

To prevent the potential for overlap of research projects and to facilitate opportunities to collaborate, below is a list of research topics that are currently being examined, categorized by outcome health behaviour topics. If external researchers are interested in collaborating on current projects listed, please contact Scott Leatherdale and the lead author highlighted on the specific project before submitting a data usage application. 

Updated February 2022

Obesity and related correlates

Learning from missing data: examining non-reporting patterns of height, weight, and BMI among Canadian youth. Requested by: Amanda Doggett. Year 7 (2018/2019). Full sample.

Using classification and regression trees to model variable-level missingness in youth BMI, height, and weight. Requested by: Amanda Doggett. Year 7 (2018/2019). Full sample.

Complete case analysis and multiple imputation: assessing the impact of missing data within youth overweight and obesity research. Requested by: Amanda Doggett. Year 7 (2018/2019). Full sample.

Modeling Obesity Rate with Spatial Auto-correlation: A Case Study. Requested by: Masud Rana. Year 5-7 (2017/18 – 2018/19). Full sample.

A prospective study of weight status and weight perception predicting academic outcomes. Requested by: Maram Livermore. Year 6-7 (2017/18 – 2018/19). Full sample.

Healthy eating

Emotional regulation as a predictor of eating behaviours. Requested by: Cassandra Lowe. Year 6-7 (2017/18-2018/19). Full sample.

Does poor diet cause mental health disorders in adolescents? Triangulating evidence on the diet-mental health association from four prospective cohort studies. Requested by: Julia Dabravolskaj. Year 5-8 (2016/17 – 2019/20). Full sample.

Physical activity and sedentary behaviours

Longitudinally examining the association between the changes in cannabis use and relative MVPA among youth in the COMPASS study. Requested by: Chris Watorowski. Year 5-7 (2016/17-2018/19). Full sample.

Longitudinally examining the association between the changes in cannabis use on the likelihood of meeting the Canadian physical activity guidelines among youth in the COMPASS study. Requested by: Chris Watorowski. Year 5-7 (2016/17-2018/19). Full sample.

Evaluating the impact of participation in school-based physical education lessons on physical activity levels and mental health among adolescents in Canada: Findings from the COMPASS study. Requested by Claire Buchan. Year 4-7 (2015/16-2018-19). Ontario sample.    

Latent profiles of youth cannabis use and associations with lifestyle behaviours. Requested by: Hughes Sampasa-Kanyinga. Year 8 (2019/2020). Full sample.

Examining the cross-sectional association between school and community physical activity facilities on physical activity and sports outcomes among a sample of Canadian youth. Requested by: Katie Burns. Year 6 (2017/18). Full sample.

Self perceptions (self concept) as predictors of sustained participation in physical education among adolescents. Requested by: Kelsey Sick. Year 5-7 (2016/2017-2018-19). Full sample.

Using causal inference to assess the effect of team sport participation on the onset of cannabis use in youth. Requested by: Marie-Pierre Sylvestre. Year 1-5 (2012/13-2016/17). Full sample.

Substance use

Identifying changes in vaping among Canadian youth vapers in the COMPASS cohort study, 2017-2019. Requested by: Adam Cole.

Exploring the association between cannabis retailer proximity and density and perceived ease of access to and use of cannabis among adolescents in Canada. Requested by: Adam Cole. Year 1-2 (2012/13-2013/14). Ontario sample.

Identifying student-level factors associated with vape escalation among Canadian students in the COMPASS Study. Requested by: Adam Cole. Year 6-7(2017/18-2018/19). Full sample. 

Cross-sectional association between retailer proximity and density and heated tobacco product use. Requested by Adam Cole.

The impact of cannabis legalization in Ontario students and the mediating role of vaping. Requested by: Adam Cole. Year 5-8 (2016/17-2019/20). Ontario sample.

Identifying student-level factors associated with vape reduction and cessation among Canadian students in the COMPASS study. Requested by: Adam Cole. Year 6-7 (2017/18-2018/19). Full sample.

Longitudinal analysis of the impact of changes to tobacco retailer proximity and density on youth smoking and vaping behaviours. Requested by: Adam Cole. Year 1-2 (2012/13-2013/14). Ontario.

Longitudinal evaluation of the Not On Tobacco (N.O.T.) pilot project in COMPASS schools on student smoking behaviours. Requested by: Adam Cole. Year 3-5 (2014/15-2016/17). Ontario sample.

Longitudinal evaluation of the impact of changes to programs/policies addressing alternative tobacco product use on student smoking behaviours. Requested by: Adam Cole. Year 1-6 (2012/13-2017/18). Full sample.

Shifting school health priorities pre-post cannabis legalization in Canada: Ontario secondary school. Requested by: Alle Butler. Year 4-7 (2015/16-2018/19). Ontario sample.

Mental health and cannabis use among Canadian youth: a comparison of research findings between the HBSC and COMPASS studies. Requested by: Alle Butler. Year 6-7 (2017/18-2018/19). Full sample.

Varying modes of cannabis consumption among Canadian secondary school students. Requested by: Isabella Romano. Year 8 (2019/20). Full sample.

Automating the detection of Canadian adolescents at risk of e-cigarette dependence using machine learning. Requested by: Jiamin Shi. Year 5-7 (2016/17-2018/19. Full sample.

The impact of public health engagement in school-based substance use prevention programs over time and the impact on student alcohol, cannabis, e-cigarette and cigarette use. Requested by: Urvi Rai. Year 5-8 (2016/17-2019/20. Ontario.

Substance use and risk perceptions in adolescents. Requested by: Lea Sfairy & Louis-Philippe Bleau. Year 7 (2018/19). Quebec Sample.

The mediating role of cannabis risk perception and access on the association between friends cannabis use and self use. Requested by: Marie-Pierre Sylvestre. Year 5-8 (2016/17-2019/20). Quebec sample.

Physical activity and sport participation’s association with vaping and illicit drug use. Requested by: Matthew Fagan. Year 7 (2018/19). Full sample.

Physical activity, sport participation and substance use: a longitudinal study. Requested by: Matthew Fagan. Year 6-8 (2017/18-2019/20). Full sample.

How do school disciplinary approaches and student perceptions of school support relate to youth cannabis use? [MSc Thesis]. Requested by: Megan Magier. Year 5-7 (2016/17-2018/19). Full sample.

Assessing substance use prevention programs/policies in Ontario high schools. Requested by: Megan Magier. Year 5-7 (2016/17-2018/19). Ontario sample.

Cohort Characteristics and Factors Associated with Cannabis Use among Adolescents in Canada Using Pattern Discovery and Disentanglement Method. Requested by: Peiyuan Zhou. Year 7 (2018/19). Full sample.

Cannabis use trends among Ontario Students: pre-post cannabis legalization. Requested by Rachel Laxer. Year 6-9 (2017/18-2019/20). Ontario sample.  

Cannabis legalization and its impact on use patterns among Canadian youth: a machine learning approach of examining the change of use patterns and health correlated. Requested by: Rena Yang. Year 7-8 (2018/18-2019/20). Full sample.

How do e-cigarette minimum legal sales age laws influence current e-cigarette use among Canadian youth? Cross sectional and longitudinal findings from the COMPASS study [PhD Dissertation]. Requested by: Sarah Aleyan. Year 4-6 (2015/16-2017/18). Ontario & Alberta sample.

Evolution de la relation entre la consummation de l’e-cigarette et de la perception du risqué chez les jeunes du secondaire. Requested by: William Journault. Year 5-7 (2016/17-2018/19). Quebec sample.

Perceived school supportiveness in resisting or quitting alcohol and/or cannabis use among Canadian high school students. Requested by Thepikaa Varatharajan. Year 7 (2018/19). Full Sample.

Mental health

Associations between barriers to help seeking and substance use. Requested by: Alex Zuckermann. Year 7 (2018/19). Full sample.

Income inequality and mental health among Canadian secondary school students, findings from the COMPASS Study 2016-2020: a longitudinal analysis. Requested by: Claire Benny. Year 5-8 (2016/17-2019/20). Full sample.  

Longitudinal association and changes between daily hours of different types of screens and anxiety and depression in youth and the moderating role of sex and age. Requested by: Fatima Mougharbel. Year 6-7 (2017/18-2018/19). Full sample.

Exploring the bi-directional associations between poly-substance use and anxiety and depression among a large sample of Canadian adolescents. Requested by: Gillian Williams. Year 7-8 (2018/19-2019/20). Full sample.

Examining trajectories of anxiety and depression among adolescents in Canada: Findings from a sex-stratified latent class growth analysis. Requested by: Isabella Romano. Year 6-9 (2017/18-2020/21). Full sample.

Exploring the factor structure and measurement of invariance of the difficulties in emotion regulation scale (DERS) among Y7 (2018/19) COMPASS adolescents. Requested by: Isabella Romano & Jenna Gilchrist. Year 7 (2018/19). Full sample.

Reciprocal relationships between positive emotions and resilience predict flourishing among adolescents’. Requested by: Jenna Gilchrist. Full sample.

Sport participation and mental health, LPA and regression. Requested by: Jenna Gilchrist.

Emotion regulation and sleep trajectories across adolescence. Requested by: Jenna Gilchrist. Year 4-7 (2015/16-2018/19). Full sample.

Co-occurrence and clustering of lifestyle behaviours in relation to common mental disorders in youth. Requested by: Julia Dabravolskaj. Year 5-8 (2016/17-2019/20). Full sample.

Examining the use of decision trees in population health surveillance research: An application to youth mental health survey data in the COMPASS study. Requested by: Kate Battista. Year 7 (2018/19). Full sample.

Imputation methods for missing data in mental health scales. Requested by: Kate Battista. Year 6-7 (2017/18-2018/19). Full sample.

Examining interpersonal and behavioural factors associated with youth anxiety, depression, and flourishing: a decision tree analysis. Requested by: Kate Battista. Year 7 (2018/19). Full sample.

Which school mental health policies and programs are associated with student depression, anxiety, and flourishing? Requested by: Kate Battista. Year 7 (2018/19). Full sample.

Lifestyle behaviour and mental health. Requested by: Katerina Maximova. Year 6-7 (2017/18-2018/19). Full sample.

Sleep, screen time and emotional regulation. Requested by: Katie Weatherson. Year 6-7 (2017/2018-2018/19). Full sample.

Exploring the bi-directional association between vaping and mental health. Requested by: Markus Duncan. Year 6-7 (2017/18-2018/19). Full sample.

The association between emotional regulation and sleep duration in adolescents. Requested by: Nour Abus Nafisa. Year 7 (2018/19). Full sample.

Cannabis-impaired driving and mental health. Requested by Taylor Truong. Year 8 (2019/20). Full sample.

School connectedness and academic achievement

Is loneliness associated with academic achievement in adolescents?. Requested by: Hussian Chattha. Year 7 (2018/19). Full sample.

Is the association between sleep and internalizing symptoms mediated by student pressures?. Requested by: Jessica Mitchell. Year 6-7 (2017/18-2018/19). Full sample.

Built environment

Exploring the impact of changing the within-school built environment on youth physical activity in the COMPASS Study. Requested by: Rachel Laxer & Adam Cole. Year 3-6 (2014/15-2017/18). Alberta, Ontario and Quebec Sample.

Longitudinal Associations Between the Community Built Environment and Adolescent Physical Activity and Mode of Transport: Four Year Results from the COMPASS study. Requested by: Stephen Hunter. Year 2-5 (2013/14-2016/17). Alberta & Ontario Sample.

The built environment (parks, green space, nature) and mental health. Requested by: Gina Martin. Year 7 (2018/19). Full sample.

COVID-19

Disparities in high schools’ immunization coverage (COVID-19). A natural experiment in the Province of Quebec. Requested by: Alice Morissette. Year 7-9 (2018/19-2020/21). Quebec sample.

Sociodemographic and mental health characteristics associated with changes in movement behaviours due to the COVID-19 pandemic in adolescents. Requested by: Amanda Lien. Year 8 (2019/21). Full sample.

Investigating the association between food security and mental health and health risk behaviours among school-age adolescents during the COVID-19 pandemic. Requested by: Arum Han. Year 9 (2020/21). Full sample.  

Perceptions of and adherence to early COVID-19-related restrictions and associations with substance use among youth in Canada. Requested by: Isabella Romano. Year 8 (2019/2020). Full sample.

Boosting participation rate in an online school health survey during COVID-19 pandemic. Requested by: Isabelle Brunet. Year 8 (2018/19). Quebec sample.

Youth mental health inequitable impacts in the early phase of the COVID-19 pandemic: An Intersectionality analysis. Requested by: Karen Patte. Year 7-9 (2018/19-2020/2021). British Columbia, Ontario, Quebec sample.

LCA of COVID-19 related concerns (63) and mental health changes. Requested by Karen Patte. Year 7-9 (2018/19-2020/21). Full sample.

Mode of school attendance, school protocols (quadmester etc) and mental health changes. Requested by: Karen Patte. Year 7-9 (2018/19-2020/21). Full sample.

The impact of COVID-19 pandemic on youth alcohol consumption: evidence from the COMPASS study.  Requested by: Mahmood Gohari. Year 5-9 (2016/17-2020/21). Full sample

Evaluating the effect of mental health and alcohol use behaviours of the youth population during COVID-19 pandemic. Requested by: Mahmood Gohari.

Changes in Movement Behaviour During COVID-19 – An Isotemporal Substitution Approach. Requested by: Mark Duncan. Year 7-8 (2018/19-2019/20). Full sample.

Associations between Mental Health Changes and Movement Behaviour Changes During COVID – An Isotemporal Substitution Approach. Requested by: Mark Duncan. Year 7-8 (2018/19-2019/20). Full sample.

La santé mentale des adolescents au travers de la pandémie de Covid-19 : constat des écoles COMPASS-Québec. Requested by: Maxime Giroux. Year 9 (2020/21). Quebec sample.

How do social (family, friends) support and social (inperson/digital) connection/isolation relate to mental health during COVID. Requested by: Negin Riazi. Year 7-9 (2018/19-2012/21). Full sample.

Youth coping methods and mental health changes. Requested by: Negin Riazi. Year 7-8 (2018/19-2019/20). Full sample.

Loneliness during COVID-19 and its association with eating and physical activity behaviour, and mental health. Requested by: Saniya Tandon. Year 9 (2020/21). Full sample.

Self-perceived body image and association with eating habits, physical activity and mental health. Requested by: Saniya Tandon. Year 8-9 (2019/20- 2020/21). Full sample.

School connectedness and mental health changes over covid-19 pandemic. Requested by: Sarah Carsley and Rachel Laxer. Year 7-9 (2018/19-2020/21). Full sample.

Sexual health

L’influence du temps dédié aux échanges numériques et du genre sur les diverses formes de sexting des adolescents. Requested by: Anne-Sophie Drouin. Year 9 (2020/2021). Quebec sample.

Understanding sexual health indicators during adolescence: a study to consider time since sexual debut when exploring multiple sexual partners. Requested by: Anne-Sophie Drouin. Year 7 (2018/2019). Quebec sample.

Other

Selection bias in longitudinal research: switching from paper to online data collection. Requested by: Mahmood Gohari. Year 8 (2019/20). Full sample.   

Gender minorities in youth. Requested by Thepikaa Varatharajan. Year 8-9 (2019/20-2020/21). Full Sample.

back to top