HSD Models

This part of the site is for actual models that have been constructed. All models that are uploaded to the site will find a home on one of the pages linked to this page.

Please do not add models to this page. Follow one of the links below and add your model there.

Guidelines for Adding Models

Models are organized according to the Evans, Barer, and Marmor model. This does not rule out other categories, which anyone may add as they see fit. Notwithstanding, for the sake of overall organization and site utility, pause to consider how others will think of your work and your model before adding other categories.

There is currently no "standard" for models. For example, system dynamics models may be contributed in Powersim Constructor or Powersim Studio, Vensim, iThink, Stella, or MyStrategy, or any other package that produces such models. Models may be quantitative (dynamic simulations) and/or they may be qualitative, based on causal loop diagrams, and/or non-simulation stock and flow diagrams and/or narratives illustrated with time trend data. Note that more standardised model conventions, documentation and sharing of executable model components is a potential area for ongoing collaboration.

Categories for Models

Each of the categories below links to a separate page. Follow the links below to reach the page where you will actually list your model. If you think there are useful categories for models that do not fit under any of the above categories, feel free to add a category below. Please consider how others will think of your model before creating new categories.

As an alternative to creating new categories, you may cross list your model (place it in more than one category).

Collaboration on Health System Models

We propose an evolutionary approach for sharing curated and annotated Health Simulation models, particularly multi-method Health Policy Models and components, similar to the Biomodels Database in the field of Systems Biology, together with its associated MIRIAM (Minimum Information Requested In the Annotation of biochemical Models) and SBML (Systems Biology Markup Language) Frameworks

An initial phase of representing conceptual Health System Archetypes based on Eric Wolstenholme's Generic Archetypes Work is envisaged.

The long term vision is to be able to share and re-use executable Health Simulation models and components that are transparent, maintained (curated), annotated, well-referenced and documented, with a particular initial emphasis on their use in Health Policy.

Opening Models

Models listed here can be opened by downloading and installing the appropriate player/viewer or demo version.

• Anylogic (*.ALP) Demo
• iThink (*.ITM) iSee Player, iThink Trial or Stella Trial
• Powersim Studio (*.SIP and *.SIM) Trial or Player (Player will only view models developed in Powersim Studio Enterprise)
• Vensim (*.MDL) Vensim PLE

Disease Based Models

For models that explore the dynamics of disease and illness burdens in populations.

Healthcare Design & Delivery Based Models

For models that explore the design and delivery of care.

Evans, Barer, and Marmor described disease/illness (and injury) and its interaction with healthcare as a dynamic in which various factors influenced the incidence of disease, to which the primary reponse is the moblization of healthcare resources. As the "outside"factors caused more disease, more healthcare resources were sought, and the pressure on technology and capacity increased.

Generally speaking, use this section to upload models that describe the dynamics of disease and the design and utilization of healthcare resources as a response to disease/illness and injury.

Genetics Based Models

For models that explore the dynamics of the influence of genetics.

Individual Behavior Based Models

For models that explore the behavioral response to disease, environment, and genetics.

Individual Biology Based Models

For models that explore the biological response to disease, environemnt, and genetics.

Physical Environment Based Models

For models that explore the dynamics of the influences on physicial environments.

Social Environment Based Models

For models that explore the dynamics of the influences on social environments.

Evans, Barer, and Marmor go on to develop a set of relationships that more robustly explore the influences on the overall illness burden of a population. This part of their model acknowledges that there are factors overwhich individuals (and/or populations) have no control and factors over which they have some degree of control, ranging from low to high.

Health and Function Based Models

For models that explore the health and function[ability] that populations experience in response to other factors.

Prosperity Based Models

For models that explore the economic impact of viewing health from a broad perspective.

Well-Being Based Models

For models that explore the influence that psychological and sociological factors have on a general sense of well-being.

The entire Evans, Barer, Marmor model looks like this:

There are also categories for models that do not exactly fit the Evans, Barer, Marmor model, but which play a role in a system dynamics view of health.

Public Policy and Politics Based Models

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Public Health Based Models

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Health Economics Based Models

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System Dynamics (General Section) Models

For models that explore the basics of system dynmamics. Thsi section differes from the generic structures section in that it houerse models that describe anbd illustrated system dyanmoics modeling in broad, general terms.

Generic Structure Based Models

For models that explore generic dynamics - that could be applied to a number of fields - and which offer insights into Heatlh System Dynamcis.

Puzzling Health Dynamics Based Models

For models that explore dimensions of health systems that do not fit neatly into any of the above categories, or models that illustrate dynamics interdependencies across multiple categories.

Whole System Based Models

For models that explore large scale views of health as a system.

Stone Soup Models

For models that defy a structured classification. Add it to the stone soup mix, stop by frequently for a tasting.

Data Time/Trend Sets

For models that defy a structured classification. Add it to the stone soup mix, stop by frequently for a tasting.