Department of Public Health Sciences Graduate Theses

CONTEMPORARY MEASURES OF MENTAL HEALTH STATUS AND SCHOOL-BASED RELATIVE AGE EFFECTS IN CANADIAN ADOLESCENTS

King, Nathan

This thesis is on the epidemiology of relative age effects and how they relate to the mental health status of young people. Contemporary measures of mental health are developed, and the association between school-based ...

Childhood Maltreatment and the Association with Life Dissatisfaction

Mrazovac, Ana

This study examined the association between childhood maltreatment (witnessing violence in the household, and experiences of physical and emotional abuse by an adult prior to the age of 16,) and dissatisfaction with later ...

MEASUREMENT OF UN PEACEKEEPER-PERPETRATED SEXUAL EXPLOITATION/ABUSE AND THE RELATED STIGMATIZATION OF WOMEN AND GIRLS IN THE DEMOCRATIC REPUBLIC OF CONGO

Gray, Samantha

Background: UN peacekeeper-perpetrated sexual exploitation and abuse (SEA) is an international concern with reported allegations across 32 peace support operations. Stigma attributed to broader sexual and gender-based ...

Solar ultraviolet radiation and colorectal cancer risk in Canada

Barabash, Tori

Background: Colorectal cancer (CRC) is the third most common cancer in Canada with an estimated 26,000 new cases in 2020. Novel modifiable risk factors such as solar ultraviolet radiation (UVR) warrant research to promote ...

POST-OPERATIVE LIVER DECOMPENSATION EVENTS FOLLOWING PARTIAL HEPATECTOMY AMONG PATIENTS WITH CIRRHOSIS AND HEPATOCELLULAR CARCINOMA

Mir, Zuhaib

Background: Partial hepatectomy, or liver resection, is a potentially-curative therapy for patients diagnosed with hepatocellular carcinoma (HCC). Because the majority of patients with HCC have pre-existing cirrhosis, ...

EFFECTS OF MULTIPLE MEDICATIONS ASSOCIATED WITH QTC PROLONGATION: PREVALENCE AND OUTCOMES ASSOCIATED WITH USE AMONG OLDER ADULTS

Murray, Lauren

Medications are commonly used by older adults and can provide many benefits. However, harmful side effects may occur, particularly when multiple medications are prescribed. Prolongation of the corrected QT (QTc) interval ...

Malaria prevention in eastern Myanmar

Cheng, Breagh

Background: Insecticide-treated bed-nets (ITNs) and mass drug administration (MDA) are key malaria elimination tools but their varied uptake has not been extensively explored among ethnic minority and displaced populations ...

Modelling the relationship between shift work and cardiometabolic risk through circadian disruption, sleep and stress pathways

Golding, Haley

Aim and objectives: The aim of this research was to use structural equation modelling methods to test an adaption of the model proposed by Knutsson and Boggild, and to elucidate and determine the multiple pathways linking ...

The Compositional associations of time spent in sleep, sedentary behaviour and physical activity with all-cause mortality

Clarke, Anna

INTRODUCTION: Daily time spent in sleep, sedentary behaviour (SED), light intensity physical activity (LIPA), and moderate-to-vigorous intensity physical activity (MVPA) are compositional, co-dependent variables. The ...

Exploring Indigenous Social Capital and Health Among Four First Nations: A Strengths-Based Study

Yeung, Sharon

The impact of social networks and relationships on health outcomes has been acknowledged and studied within the concept of “social capital” in the field of public health for over two decades. To date, however, few research ...

Bullying Victimization and Subjective Health Complaints in Canadian Adolescents: Examining Spiritual Health Connections as Protective Heath Assets

Shaver, Nicole

Background: Young people victimized by bullying may draw on assets such as spiritual health to protect them from harm. Composed of the connections in our lives (to ourselves, others, nature, or something transcendent), ...

Investigating Potential Bi-directional Relationships Between Sleep and Melatonin Among Day and Rotating Day/Night Shift Workers

Felske, Lindey

Objectives: The first objective of this study is to describe measures of sleep in day and rotating shift workers. The second objective is to assess the bi-directional relationships between sleep and melatonin among: 1) ...

The Role of Ultraviolet Radiation in the Development of Skin Cancer and Non-Hodgkin Lymphoma in Canada

O'Sullivan, Dylan

Background: Exposure to ultraviolet radiation (UVR) is an established cause of melanoma and non-melanoma skin cancer (NMSC) and moderate exposure is hypothesized to be protective against some non-cutaneous cancers, including ...

Surgical versus medical treatment and mortality in patients with infective endocarditis: The effect of selection bias, immortal time bias, and time dependent confounding

Moir, Olivia

Background: Infective endocarditis (IE) is a serious infection of the endocardium. Available evidence on the comparative effect of medical versus surgical treatment of IE is limited by systematic error. It is unclear if ...

Spatial Analysis of Sexually Transmitted Infections in Ontario

Remillard, Liam

Introduction: In recent years, Ontario has witnessed a dramatic rise in the incidence of sexually transmitted infections (STIs); however, the spatial patterning and causal factors contributing to this increase are not fully ...

Thyroid Cancer Treatment and Subsequent Infertility Diagnosis in Female Adolescents and Young Adults: A Population-Based Cohort Study

Imsirovic, Haris

Background: Unnecessary treatment of thyroid cancer as a result of increased surveillance may be associated with substantial side effects, including infertility, often without improvements in survival rates. Objective: ...

Frequency of High Diagnostic Testing and its Association With the Specialist Interval in Ontario Symptomatic Breast Cancer Patients

Cohen, Lucas

Purpose: The breast cancer diagnostic process is complex. Patients can receive various tests including mammograms, ultrasounds, MRI scans and biopsies. A protracted time to diagnosis can affect a patient’s prognosis and ...