Evidence map›Paper›PMID 29415662›Full record

ArticleBMC cancer2018

Smoking and prostate cancer: a life course analysis.

Evelyn Jiménez-Mendoza, Ruth A Vázquez-Salas, Tonatiuh Barrientos-Gutierrez, Luz Myriam Reynales-Shigematsu, Isaac Roberto Labra-Salgado, Hugo A Manzanilla-García, Luisa E Torres-Sánchez

Abstract read
In one paragraph

Article in BMC cancer, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. The profile of Black South African men diagnosed with prostate cancer in the Free State, South Africa.South African family practice : official journal of the South African Academy of Family Practice/Primary Care · 2023
    Article
  11. Review
  12. Contribution ofOncotarget · 2019
    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

7 authors.

Evelyn Jiménez-MendozaInstituto Nacional de Salud Pública (INSP), Av. Universidad 655, Col. Sta. María Ahuacatitlán, 62100, Cuernavaca, Morelos, México.
Ruth A Vázquez-SalasInstituto Nacional de Salud Pública (INSP), Av. Universidad 655, Col. Sta. María Ahuacatitlán, 62100, Cuernavaca, Morelos, México.
Tonatiuh Barrientos-GutierrezInstituto Nacional de Salud Pública (INSP), Av. Universidad 655, Col. Sta. María Ahuacatitlán, 62100, Cuernavaca, Morelos, México.
Luz Myriam Reynales-ShigematsuInstituto Nacional de Salud Pública (INSP), Av. Universidad 655, Col. Sta. María Ahuacatitlán, 62100, Cuernavaca, Morelos, México.
Isaac Roberto Labra-SalgadoHospital General de México, Dr. Balmis 148, Col. Doctores, Deleg. Cuauhtémoc, 06726, México, Ciudad de México, Mexico.
Hugo A Manzanilla-GarcíaHospital General de México, Dr. Balmis 148, Col. Doctores, Deleg. Cuauhtémoc, 06726, México, Ciudad de México, Mexico.
Luisa E Torres-SánchezInstituto Nacional de Salud Pública (INSP), Av. Universidad 655, Col. Sta. María Ahuacatitlán, 62100, Cuernavaca, Morelos, México. ltorress@insp.mx.

Funding

CONACyT 140482CONADIC/INPRFM/INSP/ENA 2016/ 001/2016
6 · The paper itself

Abstract

backgroundInconsistent associations between smoking status and prostate cancer (PC) could be due to exposure assessment error. Reconstructing smoking behaviors over the life course could reduce exposure assessment error.

methodsAs part of a case-control study, we identified 402 incident and histologically confirmed PC cases that were matched by age (±5 years) to 805 population controls. Through direct interview, we obtained information about: age at smoking onset, intensity and frequency of cigarette smoking at different life stages, and smoking cessation age. Smoking status at interview and average smoking index over the lifetime (packs/year) were estimated. Life course smoking patterns were obtained applying the k-means+ method for longitudinal data to the smoking index (pack/year) for each life stage.

resultsTwo life-course smoking patterns were identified among ever smokers: "pattern A" characterized by males who reported low and constant smoking intensity (87.8%), and "pattern B" (12.2%) males with an initial period of low intensity, followed by an increase during the second period. Compared to never smokers, pattern B was associated with higher poorly differentiated PC, (OR 2.30; 95% CI 1.21-4.38). No association was observed with average smoking index.

conclusionLife course smoking patterns seem to capture the smoking variability during life course and reduce the likelihood of reverse causation. Using this assessment strategy our findings support the potential role of tobacco smoking in PC, particularly poorly differentiated PC. Prospective studies with comprehensive smoking history during the lifetime are needed to confirm these findings.

Indexed as

Surveys and QuestionnairesAdultAgedAged, 80 and overCase-Control StudiesHumansMaleMexicoMiddle AgedMultivariate AnalysisProstatic NeoplasmsRisk AssessmentRisk FactorsSmokingGleasonMexicoProstate cancerSmoking indexSmoking patterns

Identifiers

PMID29415662
PMCPMC5803914

What OpenQuestion holds

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Registered trials

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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.