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An overview of relations among causal modelling methods Greenland S; Brumback BInt J Epidemiol 2002[Oct]; 31 (5): 1030-7This paper provides a brief overview to four major types of causal models for health-sciences research: Graphical models (causal diagrams), potential-outcome (counterfactual) models, sufficient-component cause models, and structural-equations models. The paper focuses on the logical connections among the different types of models and on the different strengths of each approach. Graphical models can illustrate qualitative population assumptions and sources of bias not easily seen with other approaches; sufficient-component cause models can illustrate specific hypotheses about mechanisms of action; and potential-outcome and structural-equations models provide a basis for quantitative analysis of effects. The different approaches provide complementary perspectives, and can be employed together to improve causal interpretations of conventional statistical results.|*Causality[MESH]|*Epidemiologic Methods[MESH]|*Models, Statistical[MESH]|Data Interpretation, Statistical[MESH]|Humans[MESH]|Observer Variation[MESH]|Risk Assessment[MESH]|Sensitivity and Specificity[MESH] |
