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Published in: Social Psychiatry and Psychiatric Epidemiology 11/2016

01-11-2016 | Invited Reviews

Causal inference and longitudinal data: a case study of religion and mental health

Authors: Tyler J. VanderWeele, John W. Jackson, Shanshan Li

Published in: Social Psychiatry and Psychiatric Epidemiology | Issue 11/2016

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Abstract

Purpose

We provide an introduction to causal inference with longitudinal data and discuss the complexities of analysis and interpretation when exposures can vary over time.

Methods

We consider what types of causal questions can be addressed with the standard regression-based analyses and what types of covariate control and control for the prior values of outcome and exposure must be made to reason about causal effects. We also consider newer classes of causal models, including marginal structural models, that can assess questions of the joint effects of time-varying exposures and can take into account feedback between the exposure and outcome over time. Such feedback renders cross-sectional data ineffective for drawing inferences about causation.

Results

The challenges are illustrated by analyses concerning potential effects of religious service attendance on depression, in which there may in fact be effects in both directions with service attendance preventing the subsequent depression, but depression itself leading to lower levels of the subsequent religious service attendance.

Conclusions

Longitudinal designs, with careful control for prior exposures, outcomes, and confounders, and suitable methodology, will strengthen research on mental health, religion and health, and in the biomedical and social sciences generally.
Appendix
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Metadata
Title
Causal inference and longitudinal data: a case study of religion and mental health
Authors
Tyler J. VanderWeele
John W. Jackson
Shanshan Li
Publication date
01-11-2016
Publisher
Springer Berlin Heidelberg
Published in
Social Psychiatry and Psychiatric Epidemiology / Issue 11/2016
Print ISSN: 0933-7954
Electronic ISSN: 1433-9285
DOI
https://doi.org/10.1007/s00127-016-1281-9

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