| Titre : | Marginal Structural Models for Sufficient Cause Interactions. (2010) |
| Auteurs : | Tyler-J VANDERWEELE ; James-M ROBINS ; VANSTEELANDT (Stijn) : BEL. Department of Applied Mathematics and Computer Sciences. Ghent University. Ghent. |
| Type de document : | Article |
| Dans : | American journal of epidemiology (vol. 171, n° 4, 2010) |
| Pagination : | 506-514 |
| Langues: | Anglais |
| Mots-clés : | Facteur ; Synergie ; Epidémiologie |
| Résumé : | [BDSP. Notice produite par INIST-CNRS R0x99HG8. Diffusion soumise à autorisation]. Sufficient cause interactions concern cases in which there is a particular causal mechanism for some outcome that requires the presence of 2 or more specific causes to operate. Empirical conditions have been derived to test for sufficient cause interactions. However, when regression outcome models are used to control for confounding variables in tests for sufficient cause interactions, the outcome models impose restrictions on the relation between the confounding variables and certain unidentified background causes within the sufficient cause framework ; often, these assumptions are implausible. By using marginal structural models, rather than outcome regression models, to test for sufficient cause interactions, modeling assumptions are instead made on the relation between the causes of interest and the confounding variables ; these assumptions will often be more plausible. The use of marginal structural models also allows for testing for sufficient cause interactions in the presence of time-dependent confounding. Such time-dependent confounding may arise in cases in which one factor of interest affects both the second factor of interest and the outcome. It is furthermore shown that marginal structural models can be used not only to test for sufficient cause interactions but also to give lower bounds on the prevalence of such sufficient cause interactions. |
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