Evidence map›Paper›PMID 22540266›Full record

ArticleInternational journal of health geographics2012

A two-stage cluster sampling method using gridded population data, a GIS, and Google Earth(TM) imagery in a population-based mortality survey in Iraq.

Lp Galway, Nathaniel Bell, Al Shatari Sae, Amy Hagopian, Gilbert Burnham, Abraham Flaxman, Wiliam M Weiss, Julie Rajaratnam, Tim K Takaro

Abstract read
In one paragraph

Article in International journal of health geographics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing 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

44 citing papers in PubMed.

  1. Road traffic injuries in Baghdad from 2003 to 2014: results of a randomised household cluster survey.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2016
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  10. Impact of Agricultural Irrigation on Anemia in Western Kenya.The American journal of tropical medicine and hygiene · 2022
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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

9 authors.

Lp GalwayFaculty of Health Sciences, Simon Fraser University, Blusson Hall 8888 University Drive, Burnaby, B.C. Canada V5A 1 S6.
Nathaniel Bell
Al Shatari Sae
Amy Hagopian
Gilbert Burnham
Abraham Flaxman
Wiliam M Weiss
Julie Rajaratnam
Tim K Takaro

Funding

Research Infrastructure for the Hopkins Population CenterR24HD042854 · NICHD · JOHNS HOPKINS UNIVERSITY · PI HAO, LINGXIN · 2003 to 2017
$5.1M
NICHD NIH HHS R24 HD042854
6 · The paper itself

Abstract

backgroundMortality estimates can measure and monitor the impacts of conflict on a population, guide humanitarian efforts, and help to better understand the public health impacts of conflict. Vital statistics registration and surveillance systems are rarely functional in conflict settings, posing a challenge of estimating mortality using retrospective population-based surveys.

resultsWe present a two-stage cluster sampling method for application in population-based mortality surveys. The sampling method utilizes gridded population data and a geographic information system (GIS) to select clusters in the first sampling stage and Google Earth TM imagery and sampling grids to select households in the second sampling stage. The sampling method is implemented in a household mortality study in Iraq in 2011. Factors affecting feasibility and methodological quality are described.

conclusionSampling is a challenge in retrospective population-based mortality studies and alternatives that improve on the conventional approaches are needed. The sampling strategy presented here was designed to generate a representative sample of the Iraqi population while reducing the potential for bias and considering the context specific challenges of the study setting. This sampling strategy, or variations on it, are adaptable and should be considered and tested in other conflict settings.

Indexed as

Geographic Information SystemsUser-Computer InterfaceCluster AnalysisFeasibility StudiesGeography, MedicalHumansIraqIraq War, 2003-2011MortalityPopulation SurveillanceSampling Studies

Identifiers

PMID22540266
PMCPMC3490933

What OpenQuestion holds

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LicenceCC BY
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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.