[show abstract][hide abstract] ABSTRACT: While static microsimulation models of the tax-transfer system are now available throughout the developed world, health microsimulation models are much rarer. This is, at least in part, due to the difficulties in creating adequate base micro-datasets upon which the microsimulation models can be constructed. In sharp contrast to tax-transfer modelling, no readily available microdata set typically contains all the health status, health service usage and socio-demographic information required for a sophisticated health microsimulation model. This paper describes three new techniques developed to overcome survey data limitations when constructing \'MediSim\', a microsimulation model of the Australian Pharmaceutical Benefits Scheme. Comparable statistical matching and data imputation techniques may be of relevance to other modellers, as they attempt to overcome similar data deficiencies. The 2001 national health survey (NHS) was the main data source for MediSim. However, the NHS has a number of limitations for use in a microsimulation model. To compensate for this, we statistically matched the NHS with another national survey to create synthetic families and get a complete record for every individual within each family. Further, we used complementary datasets to impute short term health conditions and prescribed drug usage for both short- and long-term health conditions. The application of statistical matching methods and use of complementary data sets significantly improved the usefulness of the NHS as a base dataset for MediSim.
Journal of Artificial Societies and Social Simulation, The 07/2008; 11. · 1.16 Impact Factor
[show abstract][hide abstract] ABSTRACT: Finding ways of curbing government expenditure on the Pharmaceutical Benefits Scheme (PBS) while maintaining social equity and access to 'essential' medicines is at the centre of ongoing public debate. This article describes a microsimulation model of the PBS that simulates current and future use and costs of PBS medicines under existing and different PBS policy settings, and estimates the distributional effects of policy changes. The article outlines future developments that will extend the current model to include health outcomes. Adding health outcomes will enable the debate on PBS sustainability to be advanced beyond the prevailing cost-containment mentality to consider not only the costs of pharmaceutical use but also the benefits that result from the use of these medicines. Copyright 2004 The University of Melbourne, Melbourne Institute of Applied Economic and Social Research.
[show abstract][hide abstract] ABSTRACT: This article examines the redistributive impact of Commonwealth outlays and taxes (including outlays directed through and to the States)and two possible alternative systems of distributing Commonwealth funding amongst the States.
Australian Economic Review. 02/2002; 35(3):325-334.
[show abstract][hide abstract] ABSTRACT: This paper presents estimates of housing stress for Statistical Local Areas (SLA) in Victoria, Queensland and the ACT in 2005. The estimates were created by synthesising small-area microdata for measuring housing stress. The technique involves the reweighting of a national ABS sample survey to Census benchmarks for each small area at the SLA level. The reweighting process converts the set of national household weights obtained from the sample survey into sets of household weights for small areas (one set per SLA). This paper defines a household in housing stress as being one that is in the bottom 40 per cent of equivalent household disposable income and whose net spending on housing after subtracting any rent assistance received is more than 30 per cent of their income (i.e. a 'net' rather than 'gross' housing stress measure). Housing stress was found to be more prevalent in the urban areas - especially in the capital cities, followed by other urban centres (especially the fast-growing regions on the eastern seaboard).