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Tobacco products can lead to chronic health effects that can take decades to manifest (e.g., lung cancer can take 20+ years), which would require long-term studies to assess. Population models and simulations provide a desirable alternative for making estimates and predictions of likely impact on morbidity/mortality at the population level in the absence of empirical data. Mathematical, computational, and simulation models can also help guide regulatory activities such as new product authorizations and policy development. Such models take into consideration both users and nonusers of tobacco products and include cohort but are not limited to cohort models, agentagent-based models, deterministic deterministic and stochastic systemic dynamic models, and static static and dynamic social network models.
The objective of population modeling is to study the impact of tobacco products on the population as whole. Input parameters include demographic information, tobacco use transition probability and mortality and/or morbidity. The input parameters are typically derived from population-level sources (e.g., census data or other population-level surveys). However, depending on the objective, other sources of data may be used. When using these other sources, steps should be taken to ensure they are representative of the population.
Outputs of the model may include projections on morbidity/mortality and prevalence of use resulting from the impact of the desired objective of the model (such as new product authorizations or regulatory policy development).

In this section, these models are discussed with regard to inputs to, and outputs from the models, and how these models contribute to studies of tobacco products, and how they are represented in CDISC standards for submission to a regulatory authority.

Unknown User (a.paredes) will work on additional language to introduce the concept of "parameters" in the context of population modeling.

An clear description of what is in scope

We need to be clear in this section on scope - "what it is and what it is not" - Scope clarified to baseline input parameters used to support downstream modeling only

To be included in a subsequent subsection:

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Examples in this section illustrate how CDISC analysis standards represent parameters used as inputs to such modeling.