What happened
Australian researchers and government agencies have conducted a substantial body of work examining the prevalence of gambling behaviour and gambling-related harm across the population. These studies, carried out at both state and national levels, employ standardised measurement tools to assess the extent and nature of gambling participation, the distribution of gambling-related harm, and the risk factors associated with the development of problem gambling. The Australian Gambling Research Centre (AGRC), based within the Australian Institute of Family Studies, has been a central body in coordinating and publishing research in this field.
The primary screening instrument used in Australian prevalence studies is the Problem Gambling Severity Index (PGSI), a nine-item scale that forms part of the Canadian Problem Gambling Index. The PGSI classifies respondents into categories based on their gambling behaviour and its consequences: non-problem gambling, low-risk gambling, moderate-risk gambling, and problem gambling. This graduated classification is important because it recognises that gambling-related harm exists on a spectrum, with individuals at lower risk levels still experiencing negative consequences even if they do not meet the threshold for problem gambling classification.
State and territory governments have commissioned prevalence studies at various intervals, providing jurisdiction-level data on gambling behaviour patterns. These studies, typically conducted through large-scale population surveys, have generated findings that inform regulatory settings, harm minimisation policies, and the allocation of resources for treatment and support services. The methodology of these studies has evolved over time, with more recent research incorporating broader measures of gambling-related harm that extend beyond the individual gambler to include impacts on families, communities, and workplaces.
National-level data has been collected through instruments such as the Household, Income and Labour Dynamics in Australia (HILDA) survey and other population health surveys that include gambling-related questions. The Australian Institute of Health and Welfare (AIHW) has also contributed to the evidence base through its reporting on health-related indicators, including those connected to gambling behaviour. Together, these data sources provide a layered picture of gambling activity and harm across Australia, though researchers have noted methodological challenges including survey response rates and the potential for underreporting of gambling problems.
Research has identified a range of risk factors associated with the development of gambling problems, including the accessibility of gambling products, the structural characteristics of gaming machines, the frequency and intensity of gambling participation, co-occurring mental health conditions, and socioeconomic factors. The relationship between these risk factors and gambling harm has been a focus of analysis by the AGRC and academic researchers, with findings published in peer-reviewed journals and government-commissioned reports that are available through official research repositories.
Why it matters
Prevalence research is foundational to evidence-based gambling policy in Australia. The data generated by population surveys and screening instruments directly informs government decisions about regulatory settings, the allocation of funding for treatment services, and the design of harm minimisation measures. Without robust prevalence data, policymakers would lack the empirical foundation needed to calibrate their responses to gambling-related harm proportionately and effectively.
One of the most significant insights from Australian prevalence research is the recognition that gambling harm is distributed across a broader population than just those classified as problem gamblers. Research published through the AGRC and other bodies has demonstrated that a substantial proportion of total gambling-related harm in the community is experienced by individuals classified as moderate-risk or low-risk gamblers, simply because these groups are much larger in number than the problem gambling population. This finding has important policy implications, suggesting that interventions targeted solely at individuals with severe gambling problems may not address the majority of gambling-related harm in the community.
The public health approach to gambling, which treats gambling-related harm as a population health issue rather than solely an individual pathology, has gained increasing traction in Australian policy discourse. This approach draws on prevalence research to argue for upstream prevention measures — such as product design regulation, advertising restrictions, and venue density controls — in addition to downstream treatment and support services. The evidence base developed through prevalence studies supports this broader framing of gambling harm as a systemic issue requiring structural as well as individual-level responses.
Research findings also inform the work of support organisations that provide assistance to individuals and families affected by gambling. Services such as Gambling Help Online and state-based counselling services use prevalence data to understand the populations they serve, identify gaps in service provision, and advocate for resources. The research evidence supports the case for sustained public investment in gambling help services and the integration of gambling harm screening into broader health and welfare service delivery.
What's next
Future prevalence research in Australia is expected to continue evolving in methodology and scope. Researchers have identified the need for more frequent and consistent national prevalence surveys to track changes in gambling behaviour over time, particularly as the gambling market undergoes structural changes including the growth of online wagering and the introduction of new regulatory measures. Longitudinal studies that follow the same individuals over time are seen as particularly valuable for understanding the pathways into and out of gambling problems.
The development of broader measures of gambling-related harm — extending beyond the PGSI to capture impacts on relationships, financial wellbeing, mental health, and community connectedness — is an active area of methodological research. Australian researchers have been at the forefront of developing and testing new harm measurement frameworks, and the adoption of these broader measures in future prevalence studies could provide a more comprehensive picture of the impacts of gambling across the population.
The integration of gambling harm data with other health and social data sets represents a further opportunity for advancing the evidence base. Linking gambling prevalence data with health service utilisation records, social welfare data, and economic indicators could provide insights into the broader societal costs of gambling harm and the effectiveness of different intervention approaches. Such data linkage would require appropriate governance and ethical oversight, which is a consideration that researchers and government agencies are actively addressing.
Internationally, Australian gambling prevalence research is recognised as among the most developed in the world, and Australian researchers continue to contribute to global knowledge in this field. Collaboration with international research networks and the sharing of methodological innovations supports the continuous improvement of gambling harm measurement and policy response, both domestically and across jurisdictions that face similar public health challenges related to gambling.