Evidence map›Paper›PMID 30731173›Full record

ArticleJournal of the American Academy of Dermatology2019

Coffee, tea, caffeine, and risk of nonmelanoma skin cancer in a Chinese population: The Singapore Chinese Health Study.

Choon Chiat Oh, Aizhen Jin, Jian-Min Yuan, Woon-Puay Koh

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Academy of Dermatology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 13% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
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  12. Antitumor Effects of Freeze-Dried Robusta Coffee (Oxidative medicine and cellular longevity · 2021
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 2 countries.

Choon Chiat OhDepartment of Dermatology, Singapore General Hospital, Singapore. Electronic address: oh.choon.chiat@singhealth.com.sg.
Aizhen JinHealth Services and Systems Research, Duke-NUS Medical School, Singapore.
Jian-Min YuanDivision of Cancer Control and Population Sciences, UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.
Woon-Puay KohHealth Services and Systems Research, Duke-NUS Medical School, Singapore; Saw Swee Hock School of Public Health, National University of Singapore, Singapore. Electronic address: woonpuay.koh@duke-nus.edu.sg.
Duke-NUS Medical School · SGSingapore General Hospital · SGUniversity of Pittsburgh · US

Funding

Prospective studies of cancer etiology and prevention in Shanghai and SingaporeR01CA144034 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI YUAN, JIAN-MIN · 2010 to 2014
$7.0M
THE SINGAPORE COHORT STUDY OF DIET AND CANCERR01CA080205 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI YUAN, JIAN-MIN · 1999 to 2009
$5.3M
Cancer epidemiology cohorts in Shanghai and Singapore UM1CA182876 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI YUAN, JIAN-MIN · 2014 to 2018
$4.3M
NCI NIH HHS R01 CA080205NCI NIH HHS R01 CA144034NCI NIH HHS UM1 CA182876
6 · The paper itself

Abstract

backgroundAlthough epidemiologic studies in populations of European descent suggest a possible chemoprotective effect of caffeine against nonmelanoma skin cancer (NMSC), data in Asian populations are lacking.

objectivesWe examined the relationship of coffee, tea, and caffeine consumption with NMSC risk among Chinese in Singapore.

methodsWe used data from the Singapore Chinese Health Study, a prospective cohort of 63,257 men and women who were 45 to 74 years old at recruitment from 1993 to 1998. Hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated by using multivariable Cox proportional hazard models.

resultsCoffee drinking was associated with reduced NMSC risk in a dose-dependent manner (P trend < .0001). Compared with those who drank coffee less than weekly, those who drank 3 or more cups per day had a lower risk of basal cell carcinoma (HR, 0.54; 95% CI, 0.31-0.93) and a lower risk of squamous cell carcinoma (HR, 0.33; 95% CI, 0.13-0.84). Compared with nondrinkers of black tea, daily drinkers of black tea also had a reduced risk of NMSC (HR, 0.70; 95% CI, 0.52-0.94). Caffeine intake reduced NMSC risk in a stepwise manner (P trend = .0025); subjects with a caffeine intake of 400 mg/d or more had the lowest risk (HR, 0.59; 95% CI, 0.34-1.04).

conclusionConsumption of caffeinated drinks such as coffee and black tea may reduce the risk of NMSC among Chinese.

Indexed as

CoffeeTeaAgedAged, 80 and overBasal Cell CarcinomaCaffeineCarcinoma, Squamous CellChinaDrinkingFemaleHumansMaleMiddle AgedProtective FactorsRisk AssessmentSingaporeCaffeineCoffeeTeacaffeineChinesecoffeenonmelanoma skin cancertea

Identifiers

PMID30731173
PMCPMC9247871
OpenAlexW2912568130

What OpenQuestion holds

Textmetadata
LicenceTDM
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.