Evidence map›Paper›PMID 25889176›Full record

ArticleBMC research notes2015

Evaluation of non-response bias in a cohort study of World Trade Center terrorist attack survivors.

Shengchao Yu, Robert M Brackbill, Steven D Stellman, Sharon Ghuman, Mark R Farfel

Open access · goldAbstract read
In one paragraph

Article in BMC research notes, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
6.9field-weighted citation impact, top 3% of its field
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

23 citing papers in PubMed, 40 citations in OpenAlex.

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  12. Comparing life satisfaction and functioning 15 years after September 11, 2001 among survivors with and without injuries: a mixed-method study.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2019
    Article
  13. An Assessment of Long-Term Physical and Emotional Quality of Life of Persons Injured on 9/11/2001.International journal of environmental research and public health · 2019
    Article
  14. Pulmonary Fibrosis among World Trade Center Responders: Results from the WTC Health Registry Cohort.International journal of environmental research and public health · 2019
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Asthma among World Trade Center First Responders: A Qualitative Synthesis and Bias Assessment.International journal of environmental research and public health · 2018
    Review
  20. Comorbidity amplifies the effects of post-9/11 posttraumatic stress disorder trajectories on health-related quality of life.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 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

5 authors at 1 institution in 1 country.

Shengchao YuNew York City Department of Health and Mental Hygiene, Long Island City, NY, USA. syu@health.nyc.gov.
Robert M BrackbillNew York City Department of Health and Mental Hygiene, Long Island City, NY, USA. rbrackbi@health.nyc.gov.
Steven D StellmanNew York City Department of Health and Mental Hygiene, Long Island City, NY, USA. sstellma@health.nyc.gov.
Sharon GhumanNew York City Department of Health and Mental Hygiene, Long Island City, NY, USA. sghuman@health.nyc.gov.
Mark R FarfelNew York City Department of Health and Mental Hygiene, Long Island City, NY, USA. mfarfel@health.nyc.gov.
New York City Department of Health and Mental Hygiene · US

Funding

Extension of the World Trade Center RegistryU50OH009739 · OH · NEW YORK CITY HEALTH/MENTAL HYGIENE · PI FARFEL, MARK R · 2009 to 2025
$120.0M
ACL HHS U50OH009739NIOSH CDC HHS 1U50OH009739NIOSH CDC HHS 2U50OH009739NIOSH CDC HHS U50 OH009739PHS HHS U50/ATU272750
6 · The paper itself

Abstract

backgroundFew longitudinal studies of disaster cohorts have assessed both non-response bias in prevalence estimates of health outcomes and in the estimates of associations between health outcomes and disaster exposures. We examined the factors associated with non-response and the possible non-response bias in prevalence estimates and association estimates in a longitudinal study of World Trade Center (WTC) terrorist attack survivors.

methodsIn 2003-04, 71,434 enrollees completed the WTC Health Registry wave 1 health survey. This study is limited to 67,670 adults who were eligible for both wave 2 and wave 3 surveys in 2006-07 and 2011-12. We first compared the characteristics between wave 3 participants (wave 3 drop-ins and three-wave participants) and non-participants (wave 3 drop-outs and wave 1 only participants). We then examined potential non-response bias in prevalence estimates and in exposure-outcome association estimates by comparing one-time non-participants (wave 3 drop-ins and drop-outs) at the two follow-up surveys with three-wave participants.

resultsCompared to wave 3 participants, non-participants were younger, more likely to be male, non-White, non-self enrolled, non-rescue or recovery worker, have lower household income, and less than post-graduate education. Enrollees' wave 1 health status had little association with their wave 3 participation. None of the disaster exposure measures measured at wave 1 was associated with wave 3 non-participation. Wave 3 drop-outs and drop-ins (those who participated in only one of the two follow-up surveys) reported somewhat poorer health outcomes than the three-wave participants. For example, compared to three-wave participants, wave 3 drop-outs had a 1.4 times higher odds of reporting poor or fair health at wave 2 (95% CI 1.3-1.4). However, the associations between disaster exposures and health outcomes were not different significantly among wave 3 drop-outs/drop-ins as compared to three-wave participants.

conclusionOur results show that, despite a downward bias in prevalence estimates of health outcomes, attrition from the WTC Health Registry follow-up studies does not lead to serious bias in associations between 9/11 disaster exposures and key health outcomes. These findings provide insight into the impact of non-response on associations between disaster exposures and health outcomes reported in longitudinal studies.

Indexed as

Surveys and QuestionnairesAdolescentAdultBiasChildEmergency RespondersFemaleHealth StatusHealth SurveysHumansInhalation ExposureLongitudinal StudiesMaleMiddle AgedNew YorkRegistries

Identifiers

PMID25889176
PMCPMC4409729
OpenAlexW2074606428

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.