Janni Leung
Biographic Data
| ID | 336624 |
|---|---|
| NAME | Janni Leung |
| GIVEN NAMES | Janni |
| FAMILY NAME | Leung |
| SIGNATURE | LEUNG J |
| AFFILIATIONS | The University of Queensland |
| ORCID | 0000-0001-5816-2959 |
| VERIFIED | Yes |
| TOTAL WORKS | 101 |
| TOTAL CITATIONS | 14 |
| AUTHOR COUNT | 101 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
Motivations and Pathways
Background Medicinal cannabis has been legally available in Australia since 2016. The current study examined the motivations for seeking medicinal cannabis and the pathways through which Australians accessed it.Methods Brief semi-structured interviews were conducted with 15 adults who self-reported medicinal cannabis use within the past 12 months. Informants were recruited at two cannabis-related events in Queensland and New South Wales. Intervie…
Prevalence, Associations and Comorbidity of Cannabis Use and Cannabis Use Disorders in the Australian National Mental Health Surveys From 2007 to 2020–22
Non‐Medical Use of Prescription Stimulants in Australia
Co‐Designing AI ‐Generated Vaping Awareness Materials With Adolescents and Young Adults
The Short‐Term Health Effects of Dealcoholised Red Wine
Tobacco smoking in Sub‐Saharan Africa
Knowledge and Concerns About Smoking‐Related Health Risks
The prevalence and correlates of self‐reported cannabis use for medicinal, dual and recreational motives in Australia
Global burden and strength of evidence for 88 risk factors in 204 countries and 811 subnational locations, 1990–2021
BACKGROUND: Understanding the health consequences associated with exposure to risk factors is necessary to inform public health policy and practice. To systematically quantify the contributions of risk factor exposures to specific health outcomes, the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2021 aims to provide comprehensive estimates of exposure levels, relative health risks, and attributable burden of disease for 88 ri…
Global incidence, prevalence, years lived with disability (YLDs), disability-adjusted life-years (Dalys), and healthy life expectancy (Hale) for 371 diseases and injuries in 204 countries and territor…
BACKGROUND: Detailed, comprehensive, and timely reporting on population health by underlying causes of disability and premature death is crucial to understanding and responding to complex patterns of disease and injury burden over time and across age groups, sexes, and locations. The availability of disease burden estimates can promote evidence-based interventions that enable public health researchers, policy makers, and other professionals to im…
The Gaming Disorder Identification Test (Gadit) – A screening tool for Gaming Disorder based on ICD-11
Participation in Australian drug treatment programs for individuals engaging in high‐risk substance use
Through the looking glass
What is the hype on # MedicinalCannabis in the United States? A content analysis of medicinal cannabis tweets
How much cannabis is used in a joint in Australia? An experimental investigation into use by potency and frequency
Extended hours of video game play and negative physical symptoms and pain
Video games are a source of positive experiences and joy for many people. However, some interaction styles may lead to negative consequences. We aimed to examine the potential negative physical problems associated with video gaming behaviors. Data were from the 2022 International Gaming Study (IGS22), a cross-sectional survey of 955 individuals aged 18–94 (M = 46.10 [16.19]; 45% male) who played video games. We examined the association between pr…
The Use and Knowledge Around Vaping and Their Correlates Among University Students—A Cross-sectional Australian Study
The increasing prevalence of e-cigarette use (“vaping”) among youth has emerged as a public health concern. We aim to explore vape use, knowledge levels, and correlates in a sample of Australian young adults. Participants from six residential university colleges in Queensland, Australia, were invited to complete an online survey. The sample included 716 students ( M age =18.1 years). Correlates of vape use and knowledge examined included socio-de…
Investigating the Critical Period for Alcohol or Other Drug-Related Presentations Following Access to Residential Substance Use Treatment
Individuals who access residential treatment for substance use disorders are at a greater risk of negative health and substance-use outcomes upon exiting treatment. Using linked data, we aimed to identify predictive factors and the critical period for alcohol or other drug (AOD)-related events following discharge. Participants include 1056 individuals admitted to three residential treatment centres in Queensland, Australia from January 1 2014 to …
Patterns of drug use among people who inject drugs
Regional and Country Prevalence Estimates of Unsafe Sex Among Adolescents in 68 Low-Income and Middle-Income Countries
Prioritizing adolescent health is a public health priority to achieve the sustainable development goals, including reducing the risk of unsafe sex. Data on unsafe sex have remained scarce among adolescents in low-and middle-income countries (LMICs). To estimate the prevalence of unsafe sex in LMICs, we conducted secondary data analysis on the Global School-based Student Health Surveys among 244,863 students aged 13–17 years from 68 countries acro…
Patterns of Social Media Use across Age Groups during the Covid-19 Pandemic
The aim of this study was to examine patterns of social media use across age groups in four countries (Norway, USA, UK, and Australia) two years after the COVID-19 pandemic outbreak, and whether types of use and time spent using social media was related to health worries. A cross-sectional online survey was completed by 1578 adult participants. The data were analysed with one-way analyses of variance and a linear regression analysis. Younger peop…
Epidemiology of injecting drug use, prevalence of injecting-related harm, and exposure to behavioural and environmental risks among people who inject drugs
Associations between the prevalence of chronic hepatitis B among people who inject drugs and country‐level characteristics
A latent class analysis of patterns of tobacco and cannabis use in Australia and their health‐related correlates
Methamphetamine exposure and depression—A systematic review and meta‐analysis
Loneliness and Its Association With Social Media Use During the Covid-19 Outbreak
Social distancing rules during the COVID-19 pandemic changed social interaction for many and increased the risk of loneliness in the general population. Social media use has been ambiguously related to loneliness, and associations may differ by age. The study aimed to examine loneliness and its association with social media use within different age groups during the COVID-19 pandemic. A cross-sectional online survey was conducted in Norway, the U…
Perceived Trust in Public Authorities Nine Months after the Covid-19 Outbreak
This study aimed to examine the perceived trust in information provided by public authorities and financial measures put in place to address the impact of COVID-19. Using a cross-national approach among four Western countries-the United States of America, Norway, Australia, and the United Kingdom-provides an analysis of responses related to trust and how they were associated with age group, gender, education level, employment status, size of plac…
Patterns of Social Media Use across Age Groups during the Covid-19 Pandemic
The aim of this study was to examine patterns of social media use across age groups in four countries (Norway, USA, UK, and Australia) two years after the COVID-19 pandemic outbreak, and whether types of use and time spent using social media was related to health worries. A cross-sectional online survey was completed by 1578 adult participants. The data were analysed with one-way analyses of variance and a linear regression analysis. Younger peop…
P2-64 Absolute risk charts for death within 10 years for Australian in their 70's by behavioural risk factors
Introduction Demographic changes and increasing life expectancy in developed countries mean that ever increasing numbers of people will live into their 70s. These individuals, their families and healthcare providers, and healthcare policy makers will be seeking valid, yet simple, information that helps them predict their long-term mortality and how their risk may be reduced. Increasing age and health-related behaviours, such as smoking and physic…
Impact of behavioural risk factors on death within 10 years for women and men in their 70s
These absolute risk charts provide a tool for understanding the combined effects of behavioural risk factors for death among older people
Longitudinal Patterns of Breast Cancer Screening
Global, regional, and national disability-adjusted life-years (Dalys) for 315 diseases and injuries and healthy life expectancy (Hale), 1990–2015
BACKGROUND: Healthy life expectancy (HALE) and disability-adjusted life-years (DALYs) provide summary measures of health across geographies and time that can inform assessments of epidemiological patterns and health system performance, help to prioritise investments in research and development, and monitor progress toward the Sustainable Development Goals (SDGs). We aimed to provide updated HALE and DALYs for geographies worldwide and evaluate ho…
Measuring the health-related Sustainable Development Goals in 188 countries
BACKGROUND: In September, 2015, the UN General Assembly established the Sustainable Development Goals (SDGs). The SDGs specify 17 universal goals, 169 targets, and 230 indicators leading up to 2030. We provide an analysis of 33 health-related SDG indicators based on the Global Burden of Diseases, Injuries, and Risk Factors Study 2015 (GBD 2015). METHODS: We applied statistical methods to systematically compiled data to estimate the performance of…
Global, regional, and national life expectancy, all-cause mortality, and cause-specific mortality for 249 causes of death, 1980–2015
BACKGROUND: Improving survival and extending the longevity of life for all populations requires timely, robust evidence on local mortality levels and trends. The Global Burden of Disease 2015 Study (GBD 2015) provides a comprehensive assessment of all-cause and cause-specific mortality for 249 causes in 195 countries and territories from 1980 to 2015. These results informed an in-depth investigation of observed and expected mortality patterns bas…
Global, regional, and national comparative risk assessment of 79 behavioural, environmental and occupational, and metabolic risks or clusters of risks, 1990–2015
BACKGROUND: The Global Burden of Diseases, Injuries, and Risk Factors Study 2015 provides an up-to-date synthesis of the evidence for risk factor exposure and the attributable burden of disease. By providing national and subnational assessments spanning the past 25 years, this study can inform debates on the importance of addressing risks in context. METHODS: We used the comparative risk assessment framework developed for previous iterations of t…
Global, regional, and national incidence, prevalence, and years lived with disability for 310 diseases and injuries, 1990–2015
BACKGROUND: Non-fatal outcomes of disease and injury increasingly detract from the ability of the world's population to live in full health, a trend largely attributable to an epidemiological transition in many countries from causes affecting children, to non-communicable diseases (NCDs) more common in adults. For the Global Burden of Diseases, Injuries, and Risk Factors Study 2015 (GBD 2015), we estimated the incidence, prevalence, and years liv…
Rural and Urban Differences in Adolescent Alcohol Use, Alcohol Supply, and Parental Drinking
PURPOSE: Alcohol use is more prevalent in rural than urban areas in adult populations. Few studies have focused on adolescent drinking. This study investigated if adolescents in regional and rural areas of Australia were more likely to drink alcohol and if there were differences in parental drinking and alcohol supply across regions. METHODS: A subsample from the National Drug Strategy Household Survey 2013, the largest nationally representative …
Trend in alcohol use in Australia over 13 years
These findings are partially consistent with and support Skog's collectivity theory. There has been a turnaround in alcohol consumption after a decade-long uptrend, as evident in the collective decreases in alcohol consumption among nearly all types of drinkers. There was also a turnaround in rate of treatment seeking, which peaked at 2007 and then decreased steadily. The timing of this turnaround differs with level of drinking, with non-high ris…
Measuring progress and projecting attainment on the basis of past trends of the health-related Sustainable Development Goals in 188 countries
BACKGROUND: The UN's Sustainable Development Goals (SDGs) are grounded in the global ambition of "leaving no one behind". Understanding today's gains and gaps for the health-related SDGs is essential for decision makers as they aim to improve the health of populations. As part of the Global Burden of Diseases, Injuries, and Risk Factors Study 2016 (GBD 2016), we measured 37 of the 50 health-related SDG indicators over the period 1990-2016 for 188…
Global, regional, and national incidence, prevalence, and years lived with disability for 328 diseases and injuries for 195 countries, 1990–2016
BACKGROUND: As mortality rates decline, life expectancy increases, and populations age, non-fatal outcomes of diseases and injuries are becoming a larger component of the global burden of disease. The Global Burden of Diseases, Injuries, and Risk Factors Study 2016 (GBD 2016) provides a comprehensive assessment of prevalence, incidence, and years lived with disability (YLDs) for 328 causes in 195 countries and territories from 1990 to 2016. METHO…
Healthcare Access and Quality Index based on mortality from causes amenable to personal health care in 195 countries and territories, 1990–2015
BACKGROUND: National levels of personal health-care access and quality can be approximated by measuring mortality rates from causes that should not be fatal in the presence of effective medical care (ie, amenable mortality). Previous analyses of mortality amenable to health care only focused on high-income countries and faced several methodological challenges. In the present analysis, we use the highly standardised cause of death and risk factor …
Global, regional, and national age-sex specific mortality for 264 causes of death, 1980–2016
BACKGROUND: Monitoring levels and trends in premature mortality is crucial to understanding how societies can address prominent sources of early death. The Global Burden of Disease 2016 Study (GBD 2016) provides a comprehensive assessment of cause-specific mortality for 264 causes in 195 locations from 1980 to 2016. This assessment includes evaluation of the expected epidemiological transition with changes in development and where local patterns …
Global, regional, and country-level coverage of interventions to prevent and manage HIV and hepatitis C among people who inject drugs
Global, regional, and national comparative risk assessment of 84 behavioural, environmental and occupational, and metabolic risks or clusters of risks, 1990–2016
BACKGROUND: The Global Burden of Diseases, Injuries, and Risk Factors Study 2016 (GBD 2016) provides a comprehensive assessment of risk factor exposure and attributable burden of disease. By providing estimates over a long time series, this study can monitor risk exposure trends critical to health surveillance and inform policy debates on the importance of addressing risks in context. METHODS: We used the comparative risk assessment framework dev…
Global, regional, and national under-5 mortality, adult mortality, age-specific mortality, and life expectancy, 1970–2016
BACKGROUND: Detailed assessments of mortality patterns, particularly age-specific mortality, represent a crucial input that enables health systems to target interventions to specific populations. Understanding how all-cause mortality has changed with respect to development status can identify exemplars for best practice. To accomplish this, the Global Burden of Diseases, Injuries, and Risk Factors Study 2016 (GBD 2016) estimated age-specific and …
Global prevalence of injecting drug use and sociodemographic characteristics and prevalence of HIV, HBV, and HCV in people who inject drugs
Global, regional, and national disability-adjusted life-years (Dalys) for 333 diseases and injuries and healthy life expectancy (Hale) for 195 countries and territories, 1990–2016
BACKGROUND: Measurement of changes in health across locations is useful to compare and contrast changing epidemiological patterns against health system performance and identify specific needs for resource allocation in research, policy development, and programme decision making. Using the Global Burden of Diseases, Injuries, and Risk Factors Study 2016, we drew from two widely used summary measures to monitor such changes in population health: di…
Parental supply of alcohol and adolescent drinking
A high prevalence of parental supply in a region was associated with heavier adolescent drinking, regardless of whether adolescents primarily obtained their alcohol from their own parents
The State of US Health, 1990-2016
Introduction: Several studies have measured health outcomes in the United States, but none have provided a comprehensive assessment of patterns of health by state. Objective: To use the results of the Global Burden of Disease Study (GBD) to report trends in the burden of diseases, injuries, and risk factors at the state level from 1990 to 2016. Design and Setting: A systematic analysis of published studies and available data sources estimates the…
The global burden of disease attributable to alcohol and drug use in 195 countries and territories, 1990–2016
BACKGROUND: Alcohol and drug use can have negative consequences on the health, economy, productivity, and social aspects of communities. We aimed to use data from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2016 to calculate global and regional estimates of the prevalence of alcohol, amphetamine, cannabis, cocaine, and opioid dependence, and to estimate global disease burden attributable to alcohol and drug use between 1…
Alcohol use and burden for 195 countries and territories, 1990–2016
BACKGROUND: Alcohol use is a leading risk factor for death and disability, but its overall association with health remains complex given the possible protective effects of moderate alcohol consumption on some conditions. With our comprehensive approach to health accounting within the Global Burden of Diseases, Injuries, and Risk Factors Study 2016, we generated improved estimates of alcohol use and alcohol-attributable deaths and disability-adjus…
Global, regional, and national comparative risk assessment of 84 behavioural, environmental and occupational, and metabolic risks or clusters of risks for 195 countries and territories, 1990–2017
BackgroundThe Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2017 comparative risk assessment (CRA) is a comprehensive approach to risk factor quantification that offers a useful tool for synthesising evidence on risks and risk–outcome associations. With each annual GBD study, we update the GBD CRA to incorporate improved methods, new risks and risk–outcome pairs, and new data on risk exposure levels and risk–outcome associatio…
Global, regional, and national disability-adjusted life-years (Dalys) for 359 diseases and injuries and healthy life expectancy (Hale) for 195 countries and territories, 1990–2017
BACKGROUND: How long one lives, how many years of life are spent in good and poor health, and how the population's state of health and leading causes of disability change over time all have implications for policy, planning, and provision of services. We comparatively assessed the patterns and trends of healthy life expectancy (HALE), which quantifies the number of years of life expected to be lived in good health, and the complementary measure o…
Medicine (74 works) · Environmental health (54 works) · Demography (39 works) · Psychology (31 works) · Psychiatry (30 works) · Population (29 works) · Public health (24 works) · Substance Abuse Treatment and Outcomes (23 works) · Burden of disease (22 works) · Disease (18 works)