Evidence map›Paper›PMID 19484136›Full record

ArticleHealth services & outcomes research methodology2008

Causal Mediation Analyses for Randomized Trials.

Kevin G Lynch, Mark Cary, Robert Gallop, Thomas R Ten Have

Registry-linked trialAbstract read
In one paragraph

Article in Health services & outcomes research methodology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04214327 (Strengthening Families Program Online for Teens and Families), which is not on this map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT04214327 naunknown statusnot on this mapstarted 2022, after this paper: background citation

Strengthening Families Program Online for Teens and Families

TypeinterventionalSponsorStrengthening Families Program LLCRan2022 to 2023Enrolled480ConditionsSubstance AbuseArmsStrengthening Families Program Online eLearning Game, SFP Home-use DVD, Wait-Listed Control
3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Trial
  4. Causal Inference in Studies with Functional Unmasking: Psychedelics and Beyond.medRxiv : the preprint server for health sciences · 2026
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  7. Article
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  11. The West Philadelphia asthma care implementation study (NHLBI#Contemporary clinical trials communications · 2021
    Article
  12. Article
  13. Article
  14. Article
  15. Mediators of a 12-month change in physical activity in ethnically diverse sample of postpartum women.Translational journal of the American College of Sports Medicine · 2019
    Article
  16. Article
  17. Article
  18. Article
  19. Statistical approaches for enhancing causal interpretation of the M to Y relation in mediation analysis.Personality and social psychology review : an official journal of the Society for Personality and Social Psychology, Inc · 2015
    Article
  20. Prevention system mediation of communities that care effects on youth outcomes.Prevention science : the official journal of the Society for Prevention Research · 2014
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Kevin G LynchDepartment of Psychiatry, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, January 22, 2008.
Mark Cary
Robert Gallop
Thomas R Ten Have

Funding

DEPRESSION AND MEDICAL CARE:AGING AND CLINICAL SETTINGP30MH066270 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI KATZ, IRA R · 2002 to 2006
$6.2M
COGNITIVE THERAPY FOR THE PREVENTION OF SUICIDEP20MH071905 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI BECK, AARON T · 2004 to 2008
$2.8M
PREVENTION OF SUICIDE IN THE ELDERLYR01MH059380 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI KATZ, IRA R · 1998 to 2002
$1.9M
Causal Methods for Mediation and InteractionR01MH078016 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI JOFFE, MARSHALL M · 2007 to 2010
$1.3M
Mixed Effects Models--Discrete Data with Non-ComplianceR01MH061892 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI TENHAVE, THOMAS R · 2001 to 2004
$1.2M
Analysis of Case-Control Follow-Up StudiesR01CA095415 · NCI · UNIVERSITY OF PENNSYLVANIA · PI JOFFE, MARSHALL M · 2004 to 2006
$515k
NCI NIH HHS R01 CA095415NIMH NIH HHS P20 MH071905NIMH NIH HHS P30 MH066270NIMH NIH HHS R01 MH059380NIMH NIH HHS R01 MH061892NIMH NIH HHS R01 MH078016
6 · The paper itself

Abstract

In the context of randomized intervention trials, we describe causal methods for analyzing how post-randomization factors constitute the process through which randomized baseline interventions act on outcomes. Traditionally, such mediation analyses have been undertaken with great caution, because they assume that the mediating factor is also randomly assigned to individuals in addition to the randomized baseline intervention (i.e., sequential ignorability). Because the mediating factors are typically not randomized, such analyses are unprotected from unmeasured confounders that may lead to biased inference. We review several causal approaches that attempt to reduce such bias without assuming that the mediating factor is randomized. However, these causal approaches require certain interaction assumptions that may be assessed if there is enough treatment heterogeneity with respect to the mediator. We describe available estimation procedures in the context of several examples from the literature and provide resources for software code.

Identifiers

PMID19484136
PMCPMC2688317

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.