Evidence map›Paper›PMID 31971226›Full record

ArticleAmerican journal of epidemiology2020

Smoking-Related Risks of Colorectal Cancer by Anatomical Subsite and Sex.

Inger T Gram, Song-Yi Park, Lynne R Wilkens, Christopher A Haiman, Loïc Le Marchand

Open access · hybridAbstract read
In one paragraph

Article in American journal of epidemiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 2 pooled it
2.3field-weighted citation impact, top 9% 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

40 citing papers in PubMed, 2 syntheses or guidelines pooled it, 58 citations in OpenAlex.

  1. Pooled it
  2. Association between smoking and colorectal cancer in Eastern Mediterranean Regional Office (EMRO): A systematic review and meta-analysis.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association
    Pooled it
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Sleep duration, selected circulating biomarkers, and colorectal cancer risk.European journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP) · 2026
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Accounting for Endoscopic Screening in Colorectal Cancer Risk Models.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2025
    Article
  16. Review
  17. Deciphering the impact of dietary habits and behavioral patterns on colorectal cancer.International journal of surgery (London, England) · 2025
    Review
  18. Article
  19. Article
  20. 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 4 institutions in 2 countries.

Inger T GramDepartment of Community Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway.
Song-Yi ParkPopulation Sciences in the Pacific Program, University of Hawaii Cancer Center, Honolulu, Hawaii.
Lynne R WilkensPopulation Sciences in the Pacific Program, University of Hawaii Cancer Center, Honolulu, Hawaii.
Christopher A HaimanDepartment of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California.
Loïc Le MarchandPopulation Sciences in the Pacific Program, University of Hawaii Cancer Center, Honolulu, Hawaii.
University of Hawaiʻi at Mānoa · USUiT The Arctic University of Norway · NOUniversity of Hawaii System · USUniversity of Southern California · US

Funding

University of Hawaii Cancer Center CCSGP30CA071789 · NCI · UNIVERSITY OF HAWAII AT MANOA · PI Xin Chen · 1996 to 2026
$56.2M
Understanding Population Differences in Cancer: The MEC StudyU01CA164973 · NCI · UNIVERSITY OF HAWAII AT MANOA · PI HAIMAN, CHRISTOPHER ALAN, LE MARCHAND, LOIC · 2015 to 2025
$37.4M
NCI NIH HHS N01 PC035137NCI NIH HHS N01 PC035139NCI NIH HHS P30 CA071789NCI NIH HHS U01 CA164973
6 · The paper itself

Abstract

The purpose of this study was to examine whether the increased risk of colorectal cancer due to cigarette smoking differed by anatomical subsite or sex. We analyzed data from 188,052 participants aged 45-75 years (45% men) who were enrolled in the Multiethnic Cohort Study in 1993-1996. During a mean follow-up period of 16.7 years, we identified 4,879 incident cases of invasive colorectal adenocarcinoma. In multivariate Cox regression models, as compared with never smokers of the same sex, male ever smokers had a 39% higher risk (hazard ratio (HR) = 1.39, 95% confidence interval (CI): 1.16, 1.67) of cancer of the left (distal or descending) colon but not of the right (proximal or ascending) colon (HR = 1.03, 95% CI: 0.89, 1.18), while female ever smokers had a 20% higher risk (HR = 1.20, 95% CI: 1.06, 1.36) of cancer of the right colon but not of the left colon (HR = 0.96, 95% CI: 0.80, 1.15). Compared with male smokers, female smokers had a greater increase in risk of rectal cancer with number of pack-years of smoking (P for heterogeneity = 0.03). Our results suggest that male smokers are at increased risk of left colon cancer and female smokers are at increased risk of right colon cancer. Our study also suggests that females who smoke may have a higher risk of rectal cancer due to smoking than their male counterparts.

Indexed as

AdenocarcinomaAgedAged, 80 and overAlcohol DrinkingBody Weights and MeasuresCigarette SmokingCohort StudiesColonic NeoplasmsColorectal NeoplasmsEducational StatusExerciseFemaleHumansMaleMenopauseMiddle Agedcohort studiescolon cancercolorectal cancermultiethnic populationsrectal cancersexsmoking

Identifiers

PMID31971226
PMCPMC7368133
OpenAlexW3001130180

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.