Evidence map›Paper›PMID 24252624›Full record

ArticleBMC medical research methodology2013

A regression model for risk difference estimation in population-based case-control studies clarifies gender differences in lung cancer risk of smokers and never smokers.

Stephanie A Kovalchik, Sara De Matteis, Maria Teresa Landi, Neil E Caporaso, Ravi Varadhan, Dario Consonni, Andrew W Bergen, Hormuzd A Katki, Sholom Wacholder

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Article in BMC medical research methodology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing 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.

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

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

  1. Pooled it
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  4. Review
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  6. Article
  7. Article
  8. Hormone Use, Reproductive History, and Risk of Lung Cancer: The Women's Health Initiative Studies.Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer · 2015
    Article
  9. 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

9 authors.

Stephanie A KovalchikEconomics, Sociology, and Statistics Department, RAND Corporation, Santa Monica, CA, USA. skovalch@rand.org.
Sara De Matteis
Maria Teresa Landi
Neil E Caporaso
Ravi Varadhan
Dario Consonni
Andrew W Bergen
Hormuzd A Katki
Sholom Wacholder

Funding

Descriptive Studies and Record LinkageZIACP010183 · NCI · DIVISION OF CANCER EPIDEMIOLOGY AND GENETICS · PI SHIELS, MEREDITH · 2009 to 2025
$10.7M
Intramural NIH HHS
6 · The paper itself

Abstract

backgroundAdditive risk models are necessary for understanding the joint effects of exposures on individual and population disease risk. Yet technical challenges have limited the consideration of additive risk models in case-control studies.

methodsUsing a flexible risk regression model that allows additive and multiplicative components to estimate absolute risks and risk differences, we report a new analysis of data from the population-based case-control Environment And Genetics in Lung cancer Etiology study, conducted in Northern Italy between 2002-2005. The analysis provides estimates of the gender-specific absolute risk (cumulative risk) for non-smoking- and smoking-associated lung cancer, adjusted for demographic, occupational, and smoking history variables.

resultsIn the multiple-variable lexpit regression, the adjusted 3-year absolute risk of lung cancer in never smokers was 4.6 per 100,000 persons higher in women than men. However, the absolute increase in 3-year risk of lung cancer for every 10 additional pack-years smoked was less for women than men, 13.6 versus 52.9 per 100,000 persons.

conclusionsIn a Northern Italian population, the absolute risk of lung cancer among never smokers is higher in women than men but among smokers is lower in women than men. Lexpit regression is a novel approach to additive-multiplicative risk modeling that can contribute to clearer interpretation of population-based case-control studies.

Indexed as

AdultAgedAged, 80 and overAlgorithmsCase-Control StudiesFemaleHumansLung NeoplasmsMaleMiddle AgedModels, StatisticalRegression AnalysisRisk AssessmentRisk FactorsSex DistributionSmoking

Identifiers

PMID24252624
PMCPMC3840559

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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.