Samantha Wells

Centre for Addiction and Mental Health · Institute for Mental Health Policy Research

Background Men's perpetration of sexual violence (SV) toward women in drinking venues is a pervasive yet understudied phenomenon with significant downstream consequences for women. Although men's negative attitudes and beliefs toward women play an important role in SV, current attitude measures are limited in that they do not focus on SV specific t...

Sexual aggression (SA) by men toward women, including harassment and unwanted sexual touching, is ubiquitous in drinking venues. Focus groups with 38 male volunteers aged 19-26 were used to articulate men’s perceptions, attitudes, and beliefs (PABs) related to SA in drinking venues for future development of a comprehensive questionnaire. Three cros...

Objective A scoping review of studies published in the first year of the COVID-19 pandemic focused on individuals with pre-existing symptoms of depression, anxiety, and specified stressor-related disorders, with the objective of mapping the research conducted. Eligibility criteria (1) direct study of individuals with pre-existing depressive, anxie...

Introduction Cannabis legalisation was enacted on 17 October 2018 in Canada. Accordingly, the effects of cannabis legalisation on patterns of cannabis consumption were examined among adolescents, including on cannabis initiation, any cannabis use, daily cannabis use and cannabis dependence. Methods Data from a biennial population‐based, cross‐sect...

Overdoses are increasing in the province of Ontario, Canada, where northern communities such as Sudbury have witnessed disproportionately elevated rates, with opioid-related deaths double that of the provincial average. To address this issue, governments have implemented supervised consumption services (SCS) where people who use drugs (PWUD) can us...

Background Sexual aggression (SA) is ubiquitous in drinking environments. Although such behavior is often seen as normal and acceptable, the targets of SA experience many negative consequences. This research aimed to develop a valid measure of common acts of SA in drinking settings for estimating prevalence and evaluating prevention initiatives. M...

People experiencing homeless have greater vulnerabilities in relation to climate change that require a range of policy and systems approaches. There are two interrelated areas that policymakers can consider in relation to climate change and homelessness: migration and exposure. This synthesis of the available data and expert opinion provides practi...

The COVID-19 pandemic continues to be a public health concern, with important impacts on individuals' mental health. Many people have experienced significant changes to their daily routines due to the pandemic and for some, returning to pre-pandemic routines could create elevated stress. The present study explored factors associated with stress abo...

Background: In the context of cannabis legalization in Canada, we examined the effects on cannabis patterns of consumption, including cannabis use, daily cannabis use and cannabis-related problems. In addition, we examined differential effects of cannabis legalization by age and sex. Methods: A pre-post design was operationalized by combining 19...

Introduction Governments and public health authorities across many jurisdictions implemented social (physical) distancing measures to contain the spread of the 2019 novel coronavirus disease (COVID-19). Adherence to these measures is variable and likely influenced by various factors. This study aimed to 1) identify the individual sociodemographic,...

Canada’s Guidance on Alcohol and Health is intended to replace Canada’s Low-Risk Alcohol Drinking Guidelines. It provides accurate and current information about the risks and harms associated with the use of alcohol. The guidance should help people make well-informed and responsible decisions about their alcohol consumption. It is informed by a pub...

Historically, overpolicing of some racialized and Indigenous groups in Canada has resulted in unequal application of drug laws contributing to disproportionate rates of charges and convictions in these populations. Criminal records severely and negatively impact an individual’s life and can perpetuate cycles of poverty and socioeconomic disadvantag...

Introduction Household composition may be an important factor associated with anxiety during the COVID-19 pandemic as people spend more time at home due to physical distancing and lockdown restrictions. Adults living with children–especially women–may be particularly vulnerable to anxiety as they balance additional childcare responsibilities and ho...

The COVID-19 Behavior Determinants Database is a research project that examined the sociodemographic and psychological determinants of COVID-19 related attitudes and behaviors. It is a comprehensive web-based survey that was administered to adults ages 18 or older (total n=8070) from the United States of America (n = 5326), including the four most...

Research on substance use challenges in First Nations communities is often deficit-focused and can reinforce paternalistic stereotypes that lead to further discrimination. In this article, we report on findings of a strengths-based Photovoice project done in collaboration with a First Nations’ community in southern Ontario, Canada to better underst...

We report on the system of care and sources of strength and resilience for mental health among First Nations People experiencing the impacts of historical and contemporary colonization. Aamjiwnaang First Nation, a vibrant community of approximately 2400 members in southwestern Ontario, Canada, partnered in research to reveal sources of strength and...

Objectives Trends in the extent of cannabis use in the total population and increased cannabis use and number of days of cannabis use among those who used cannabis were characterized over an 11-month period during the novel coronavirus disease pandemic in Canada. Methods Data were obtained from a national web-based, cross-sectional survey of adult...

Background Mental health problems and substance use co-morbidities during and after the COVID-19 pandemic are a public health priority. Identifying individuals at high-risk of developing mental health problems and potential sequela can inform mitigating strategies. We aimed to identify distinct groups of individuals (i.e., latent classes) based on...

The objective of this study is to summarize the research on the relationships between exposure to the COVID‐19 pandemic or previous pandemics and changes in alcohol use. A systematic search of Medline and Embase was performed to identify cohort and cross‐sectional population studies that examined changes in alcohol use during or following a pandemi...

Background This study examined whether heavy episodic drinking (HED), cannabis use, and subjective changes in alcohol and cannabis use during the COVID-19 pandemic differ between transgender and gender-diverse (TGD) and cisgender adults. Methods Successive waves of web-based cross-sectional surveys. Setting : Canada, May 2020 to March 2021. Partic...

We examined the explanatory roles of social determinants of health (SDOH) for First Nations people using a four-domain model of health and wellness based on the Medicine Wheel (i.e., physical, mental, emotional, and spiritual health), including colonial-linked stressors (i.e., historical trauma, childhood adversities, racial discrimination) and cul...

Background Daily cannabis use is most strongly implicated in the cannabis-attributable burden of disease. In the context of the novel coronavirus disease (COVID-19) pandemic in Canada, we characterized trends in daily cannabis use in the overall sample and various population subgroups, and examined risk characteristics associated with daily cannabi...

Loneliness and associated mental health problems are of particular concern during the COVID-19 pandemic due to physical distancing and lockdown restrictions. Loneliness is most common among young adults and women during the pandemic, but it is unclear if the association between loneliness and mental health problems, notably anxiety, is strongest in...

Introduction: Racial minority groups have been disproportionately affected by the 2019 novel coronavirus disease (COVID-19). Vaccine hesitancy may be a major barrier to achieving equitable herd immunity and must be addressed to reduce the excess morbidity and mortality of COVID-19 in disproportionately affected communities. This study aimed to dete...

Background Novel coronavirus disease 2019 (COVID-19) vaccine hesitancy is a barrier to achieving herd immunity, and thus, a prominent public health concern. This study aimed to identify the determinants of COVID-19 vaccine hesitancy based on the World Health Organization’s ‘3Cs’ model (i.e., confidence, complacency, and convenience) in the United S...

Background: Mental health problems and substance use co-morbidities during the COVID-19 pandemic are a public health priority. Identifying individuals at high-risk of developing these problems can directly inform mitigating strategies. We aimed to identify distinct groups of individuals (i.e., latent classes) based on patterns of self-reported ment...

Background: Background: The COVID-19 global pandemic has increased the burden of mental illness on Canadian adults. However, the complex combination of demographic, economic, lifestyle, and perceived health risks contributing to patterns of anxiety and depression have not been explored. Objective: Objectives: To harness flexible machine learning...

BACKGROUND The COVID-19 global pandemic has increased the burden of mental illness on Canadian adults. However, the complex combination of demographic, economic, and lifestyle factors and perceived health risks contributing to patterns of anxiety and depression has not been explored. OBJECTIVE The aim of this study is to harness flexible machine l...

Objective This study investigated the rates of and change in past-year antidepressant use from 1999 to 2017 among a representative sample of Ontario adults and past-year alcohol users and problem drinkers. It examined whether alcohol use and problem drinking are associated with antidepressant use over time, whether gender moderated the effect of pr...

This systematic review of reviews was conducted to examine housing precarity and homelessness in relation to climate change and weather extremes internationally. In a thematic analysis of 15 reviews (5 systematic and 10 non-systematic), the following themes emerged: risk factors for homelessness/housing precarity, temperature extremes, health conce...

Background The mental health effects of being diagnosed with COVID-19 are unknown. The present study examined whether individuals or those with someone close to them with a COVID-19 diagnosis differentially experienced anxiety during the pandemic. Methods Four web-based repeated cross-sectional surveys were conducted among Canadians aged 18 and ol...

We examined Indigenous views of wellbeing, aiming to understand how the Labrador Innu view influence of land on their health. The Innu live in two First Nation communities (Sheshatshiu and Natuashish) in the subarctic portion of the province of Newfoundland and Labrador, Canada. Their views on land and wellbeing are context specific and have not be...

In light of the negative effects of historical and contemporary colonialism on the Labrador Innu, healing initiatives grounded in self-determination, renewal of cultural practices, and non-reliance on Western bio-medicine, are known, taught and widely practiced among the Innu. The value of Indigenous healing practices in the treatment of Indigenous...

Introduction: Many Indigenous peoples around the world are disproportionately affected by mental health challenges, due to intergenerational and collective trauma stemming from historical losses and ongoing colonialism. A growing body of literature suggests that mental wellness initiatives are more culturally safe and result in more successful and...

Objectives The COVID-19 pandemic has generated multiple psychological stressors, which may increase the prevalence of depressive symptoms. Utilizing Canadian survey data, this study assessed household- and employment-related risk factors for depressive symptoms during the pandemic.MethodsA sample of 1005 English-speaking Canadian adults aged 18+ ye...

Loneliness is associated with mental health and thus is of particular concern in the COVID-19 pandemic, due to physical distancing restrictions and shelter-in-place orders. The current study assessed the associations of age, gender and their interaction with loneliness during the COVID-19 pandemic, controlling for other sociodemographic variables....

Indigenous communities increasingly assert their right to self-determination by requiring that participatory research approaches be used, valuing and prioritizing Indigenous knowledges, for the purpose of improving Indigenous health. While frameworks that focus on Indigenous knowledges are being developed, these must be adapted or developed by Indi...

Introduction and aims: To better understand the relationship between alcohol consumption and living with children, we assessed whether the association varied for men and women across diverse countries and whether this relationship was moderated by country-level gender inequality. Design and methods: We used Hierarchical Linear Modelling to analy...

Background: Mental health, substance use/addiction and violence (MSV) are important issues affecting the well-being of Indigenous People in Canada. This paper outlines the protocol for a research-to-action program called the Mental Wellness Program (MWP). The MWP aims to increase community capacity, promote relationship-building among communities,...

Globally, Indigenous mental health research has increasingly focused on strengths-based theory to understand how positive factors influence wellness. However, few studies have examined how social support buffers the effects of trauma and stress on the mental health of Indigenous people. Using survey data from 207 males and 279 females in 2 Ontario...

While mental well-being is recognized as a significant public health priority in numerous Indigenous communities, little work has focused on the mental health needs of Indigenous men. In this article, we describe results from the mixed-methods research used to inform the development of mental wellness programming for boys and men. Quantitative and...

Suicide claims over 800,000 lives each year worldwide. Suicide rates in indigenous populations in Canada are about double that of the national average, making it a serious public health issue. Numerous factors are involved in suicide risk, including genetic factors, as well as various psychosocial stressors, such as historical experience with the I...

Globally, Indigenous mental health research has increasingly focused on strengths-based theory to understand how positive factors influence wellness. However, few studies have examined how social support buffers the effects of trauma and stress on the mental health of Indigenous people. Using survey data from 207 males and 279 females in 2 Ontario...

Dear Readers, The editors of the International Journal of Alcohol and Drug Research (IJADR) are pleased to announce the release of the second issue of our 7th volume. This issue contains five research papers focused on a wide range of substance use topics such as family member’s satisfaction with alcohol and other drug treatment, risk factors for f...

Both living with children and alcohol consumption are positively associated with intimate partner violence (IPV). We assessed their combined relationship with physical IPV (P-IPV) victimization and perpetration, and explored possible moderating roles of sex and culture. Data included 15 surveys of 13,716 men and 17,832 women in 14 countries from th...

Colonization has negatively impacted Canada’s Aboriginal people, with one of the consequences being loss of traditional knowledge, beliefs and practices, including traditional healing practices. In a study of two Ontario First Nations, the objectives of this research were to examine: (1) the extent of use of traditional healing practices, including...

Purpose: Sexual-assault crimes, primarily perpetrated by males against female victims, impose a substantial burden on societies worldwide, especially on youth. Given that approximately half of all sexual assaults involve alcohol consumption by the perpetrator or victim, it is reasonable to expect that minimum legal drinking age (MLDA) restrictions...

We compared the mentoring experiences and mental health and behavioral outcomes associated with program-supported mentoring for 125 Aboriginal (AB) and 734 non-Aboriginal (non-AB) youth ages 6-17 participating in a national survey of Big Brothers Big Sisters community mentoring relationships. Parents or guardians reported on youth mental health and...

Background and purpose: The PTSD Checklist-Civilian Version (PCL-C) is a widely used screening instrument measuring posttraumatic stress disorder (PTSD). However, to our knowledge, the factor structure of the PCL-C has not been examined in an Aboriginal population. Considerable research indicates that PTSD symptoms are characterized by 4 factors,...

Heavy episodic drinking (HED), trait aggression, and conformity to masculine norms increase the risk of barroom aggression (BA) perpetration in men; however, research examining these factors relative to female BA perpetration is lacking. This study assessed the associations of HED, trait aggression, and conformity to masculine and feminine norms wi...

The 12-item World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) is a brief measurement tool used cross-culturally to capture the multi-dimensional nature of disablement through six domains, including: understanding and interacting with the world; moving and getting around; self-care; getting on with people; life activities; an...

Women frequently experience unwanted sexual touching and persistent advances at bars and parties. This study explored women's responses to these unwanted experiences through online surveys completed by 153 female bargoers (aged 19-29) randomly recruited from a bar district. More than 75% had experienced sexual touching or persistence (46% both). Mo...

Objective: To measure service use and costs associated with health care for patients with mental health (MH) and substance use/addiction (SA) problems. Methods: A 5-year cross-sectional study (2007-2012) of administrative health care data was conducted (average annual sample size = 123,235 adults aged >18 years who had a valid Ontario health car...

Objective: Research suggests that heavy episodic drinking (HED), perceived peer norms, and personal approval of aggression influence male barroom aggression (MBA). Qualitative research suggests that conformity to hegemonic masculine gender norms also influences MBA; however, quantitative research on the direct and indirect influence of masculinity...

Objective: Racial discrimination is a social determinant of health for First Nations people. Cultural resilience has been regarded as a potentially positive resource for social outcomes. Using a compensatory model of resilience, this study sought to determine if cultural resilience (compensatory factor) neutralized or offset the detrimental effect...

Commentary to: Questioning the validity of the 4+/5+ binge or heavy drinking criterion in college and clinical populations

Mental health and substance use disorders (MSD) are significant public health concerns that often co-occur with violence. To improve services that address MSD and violence [MSD(V)], it is critical to understand the perspectives of those most affected, people who have sought help for MSD(V) (i.e., “service users”), especially those with co-occurring...

Introduction and aims: Few studies have investigated the relationship of barroom aggression with both general and barroom-specific alcohol expectancies. The present study investigated these associations in a rarely studied and high-risk population: construction tradespeople. Design and methods: Male construction tradespeople (n = 211) aged 18-35...

Predrinking (preloading, pregaming) has been found to be related to alcohol use and intoxication. However, most research relies on estimates of blood alcohol concentration and does not control for usual drinking pattern. We assessed whether predrinking was associated with subsequent alcohol consumption and breath alcohol concentration (BrAC) among...

The purpose of this study was to assess (a) similarities in self-reported bar-aggression-related attitudes and behaviors among members of young male groups recruited on their way to bars and (b) group-level variables associated with individual members' self-reported likelihood of perpetrating physical bar aggression in the past year, controlling fo...

Objectives: Although the perceived risk of cannabis has decreased over the last few years, the contribution of marijuana use to the burden of disease on society is significant. Globally, Indigenous peoples have rates of marijuana use that are significantly higher than that of the general population. Understanding patterns of use is fundamental to...

Although research suggests that male peers play an important role in young men’s bar aggression, little is known about specific peer-related predictors of this behaviour. Both bar aggression and heavy alcohol consumption are associated with traditional masculinity and peer-acceptance among young men; thus, engagement in these behaviours may help yo...

Background: In a sample of treatment clients with cocaine-related problems, the present study examined sex differences in measures across six key domains, including socio-demographics, mental health, substance use, physical health, sexual health and psychosocial health. Methods: Data were utilized from a cross-sectional study of treatment clients i...

Unlabelled: The purpose of this study was to assess whether, among clients receiving substance abuse treatment (n = 616), those dependent on alcohol or cocaine differed significantly from those concurrently dependent on both drugs in terms of physical, mental, social, and economic harms as well as substance use behaviors. Methods: Clients from f...

In this study we examined associations between young adults' drinking patterns and social status within their natural drinking groups (NDGs) and assessed gender differences in these relationships. Same-sex NDGs (n=104) on route to a bar district were recruited and completed a peer-nominated measure of within-NDG status. In a follow-up online survey...

Abstract A pooled database from diverse community samples was used to examine the associations of hair cortisol concentration (HCC) with self-reported stress and stress-linked mental health measures, including depression, anxiety, alcohol and drug use, disability and experiences with aggression. As part of innovative research using a mobile laborat...

Introduction and aims: Many young adults are risky drinkers who are often missed by general population surveys. The aim of the present study was to assess factors affecting participation rates in a street intercept approach to recruiting young adult bar-goers for an online survey. Design and methods: Two hundred eighty-seven young adults were ap...

Introduction and aims: Previous research suggests a link between women's drinking and sexual victimisation; however, little is known about other factors that influence risk and how risks are linked to drinking-in-the-event. We examined how amount of alcohol consumed and peer group factors were associated with whether young women were targeted for...

Objective: This study extends previous research on masculinity and negative drinking consequences among young men by considering mediating effects of heavy episodic drinking (HED) and alcohol expectancies. We hypothesized that masculinity would have a direct relationship with negative consequences from drinking as well as indirect relationships me...

Background: Meeting potential sexual/romantic partners for mutual pleasure is one of the main reasons young adults go to bars. However, not all sexual contacts are positive and consensual, and aggression related to sexual advances is a common experience. Sometimes such aggression is related to misperceptions in making and receiving sexual advances...

Predrinking (drinking in private settings before going to licensed premises) has been shown to be positively associated with amount of alcohol consumed. The present study assesses whether this association is explained by general drinking patterns or situational factors, including drinking duration, beverage type and drinking companions. In a sample...

This letter is a reply to Barry A., Dennis M. Methodological and practical limitations to visually determining intoxication. Addiction 2013; doi: 10.1111/add.12352

The link between alcohol and men's aggression is well established, although growing evidence also points to individual and learned social factors. The aim of the present study was to investigate the relationships between male alcohol-related aggression (MARA) among young Australian men and heavy episodic drinking, trait aggression, masculinity, con...