Evidence map›Paper›PMID 28832358›Full record

ArticleEpidemiology (Cambridge, Mass.)2017

Doubly Robust Additive Hazards Models to Estimate Effects of a Continuous Exposure on Survival.

Yan Wang, Mihye Lee, Pengfei Liu, Liuhua Shi, Zhi Yu, Yara Abu Awad, Antonella Zanobetti, Joel D Schwartz

Abstract read
In one paragraph

Article in Epidemiology (Cambridge, Mass.), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Wildfire smoke PMScience advances · 2026
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  11. Assessing additive effects of air pollutants on mortality rate in Massachusetts.Environmental health : a global access science source · 2021
    Article
  12. Article
  13. Article
  14. Article
  15. Later-Life Exposure to Moderate PMInternational journal of environmental research and public health · 2020
    Article
  16. Article
  17. Estimating the causal effect of annual PMEnvironmental epidemiology (Philadelphia, Pa.) · 2019
    Article
  18. Article
  19. Estimating the Effects of PMEnvironmental health perspectives · 2018
    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

8 authors.

Yan WangaDepartment of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA; bDepartment of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA; cHarvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA; and dDivision of Rheumatology, Allergy and Immunology, Section of Clinical Sciences, Brigham and Women's Hospital, Boston, MA.
Mihye Lee
Pengfei Liu
Liuhua Shi
Zhi Yu
Yara Abu Awad
Antonella Zanobetti
Joel D Schwartz

Funding

Translational Research Support CoreP30ES000002 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI SUSAN A KORRICK · 1985 to 2026
$44.6M
Cardiovascular Health and Air Pollution: A National StudyR01ES024332 · NIEHS · HARVARD SCHOOL OF PUBLIC HEALTH · PI ZANOBETTI, ANTONELLA · 2015 to 2018
$2.5M
NIEHS NIH HHS P30 ES000002NIEHS NIH HHS R01 ES024332
6 · The paper itself

Abstract

backgroundThe effect of an exposure on survival can be biased when the regression model is misspecified. Hazard difference is easier to use in risk assessment than hazard ratio and has a clearer interpretation in the assessment of effect modifications.

methodsWe proposed two doubly robust additive hazards models to estimate the causal hazard difference of a continuous exposure on survival. The first model is an inverse probability-weighted additive hazards regression. The second model is an extension of the doubly robust estimator for binary exposures by categorizing the continuous exposure. We compared these with the marginal structural model and outcome regression with correct and incorrect model specifications using simulations. We applied doubly robust additive hazard models to the estimation of hazard difference of long-term exposure to PM2.5 (particulate matter with an aerodynamic diameter less than or equal to 2.5 microns) on survival using a large cohort of 13 million older adults residing in seven states of the Southeastern United States.

resultsWe showed that the proposed approaches are doubly robust. We found that each 1 μg m increase in annual PM2.5 exposure was associated with a causal hazard difference in mortality of 8.0 × 10 (95% confidence interval 7.4 × 10, 8.7 × 10), which was modified by age, medical history, socioeconomic status, and urbanicity. The overall hazard difference translates to approximately 5.5 (5.1, 6.0) thousand deaths per year in the study population.

conclusionsThe proposed approaches improve the robustness of the additive hazards model and produce a novel additive causal estimate of PM2.5 on survival and several additive effect modifications, including social inequality.

Indexed as

Particulate MatterSurvival RateAgedAged, 80 and overCausalityComputer SimulationEnvironmental ExposureFemaleHumansLinear ModelsMaleModels, StatisticalProbabilityPropensity ScoreProportional Hazards ModelsSoutheastern United StatesParticulate Matter

Identifiers

PMID28832358
PMCPMC5737934

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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.