Evidence map›Paper›PMID 25260596›Full record

ArticleAmerican journal of Alzheimer's disease and other dementias2015

Smoking and cognitive impairment among older persons in Malaysia.

Yadollah Abolfathi Momtaz, Rahimah Ibrahim, Tengku Aizan Hamid, Sen Tyng Chai

Abstract read
In one paragraph

Article in American journal of Alzheimer's disease and other dementias, 2015. 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.

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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

4 authors.

Yadollah Abolfathi MomtazInstitute of Gerontology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Rahimah IbrahimInstitute of Gerontology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia Department of Human Development and Family Studies, Faculty of Human Ecology, Institute of Gerontology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
Tengku Aizan HamidInstitute of Gerontology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia Department of Human Development and Family Studies, Faculty of Human Ecology, Institute of Gerontology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia aizan@upm.edu.my.
Sen Tyng ChaiInstitute of Gerontology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPrevious studies have shown conflicting results on the association between smoking and cognitive function. This study aims to examine the relationship of smoking with cognitive function. METHODOLOGY: Data for the study, consisting of 2553 older adults aged 60 years and older, were drawn from a nationwide household survey entitled "Determinants of Wellness among Older Malaysians: A Health Promotion Perspective" conducted in 2010.

resultsCurrent smokers had lower rates of cognitive impairment compared to never smokers (17.4% vs 25.9%), while cognitive function in former or ex-smokers was almost similar to that of the never smokers. Findings from multiple logistic regression analysis showed that current smokers were 37% less likely to be cognitively impaired, compared to the never smokers (odds ratio [OR] = .63; 95% confidence interval [CI]: .46-.86) while controlling for potential confounders. No difference in cognitive function was observed between former smokers and never smokers (OR = .94; 95% CI: .71-1.25).

conclusionAlthough the findings indicated a negative association between cigarette smoking and cognitive impairment, we are unable to conclude whether this relationship is causal or affected by other unmeasured confounding factors, especially survival bias.

Indexed as

SmokingAgedAged, 80 and overCognition DisordersComorbidityCross-Sectional StudiesFemaleHumansMalaysiaMaleMiddle Agedagedcigarette smokingcognitive impairmentMalaysia

Identifiers

PMID25260596
PMCPMC10852561

What OpenQuestion holds

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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.