Evidence map›Paper›PMID 23131816›Full record

ArticleThe journal of nutrition, health & aging2012

Tea drinking and cognitive function in oldest-old Chinese.

L Feng, J Li, T-P Ng, T-S Lee, E-H Kua, Y Zeng

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Article in The journal of nutrition, health & aging, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 8 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

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3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 8 syntheses or guidelines pooled it.

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  13. Improvement effect of Biluochun tea active extract on CClFood science and biotechnology · 2025
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

6 authors.

L FengDepartment of Psychological Medicine, National University of Singapore. pcmfl@nus.edu.sg
J Li
T-P Ng
T-S Lee
E-H Kua
Y Zeng

Funding

Demographic Analysis on Determinants of Healthy Longevity in ChinaR01AG023627 · NIA · DUKE UNIVERSITY · PI ZENG, YI · 2004 to 2014
$3.9M
NIA NIH HHS R01 AG023627
6 · The paper itself

Abstract

objectiveWe examined the longitudinal association between tea drinking frequency and cognitive function in a large sample of oldest-old Chinese.

designpopulation-based longitudinal cohort study.

settingThe Chinese Longitudinal Healthy Longevity Survey (CLHLS).

participants7139 participants aged 80 to 115 (mean age 91.4 years) who provided complete data at baseline (year 1998). MEASUREMENTS: Current frequency of tea drinking and past frequency at age 60 were ascertained at baseline, and baseline and follow-up cognitive assessments were performed in the years 1998 (n=7139), 2000 (n=4081), 2002 (n=2288) and 2005 (n=913) respectively. Verbal fluency test was used as measure of cognitive function.

resultsTea drinking was associated at baseline with higher mean (SD) verbal fluency scores: daily=10.7 (6.6), occasional=9.2 (5.8), non-drinker=9.0 (5.5). In linear mixed effects model that adjusted for age, gender, years of schooling, physical exercise and activities score, the regression coefficient for daily drinking (at age 60) and occasional drinking was 0.72 (P<0.0001) and 0.41(P=0.01) respectively. Tea drinkers had higher verbal fluency scores throughout the follow-up period but concurrently had a steeper slope of cognitive decline as compared with non-drinkers (coefficient for the interaction term Time*Daily drinking= -0.12, P=0.02; "Time" was defined as the time interval from baseline to follow-up assessments in years). Similar results were found for current tea drinking status at study baseline year (1998) as predictor variable.

conclusionRegular tea drinking is associated with better cognitive function in oldest-old Chinese.

Indexed as

Camellia sinensisDrinking BehaviorPhytotherapyTeaAged, 80 and overAsian PeopleCognitionCognition DisordersFemaleGeriatric AssessmentHumansLanguage DisordersLongitudinal StudiesMalePlant PreparationsPlant PreparationsTea

Identifiers

PMID23131816
PMCPMC3675265

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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.