Evidence map›Paper›PMID 27420077›Full record

SynthesisInternational journal of environmental research and public health2016

Ambient Temperature and Stroke Occurrence: A Systematic Review and Meta-Analysis.

Xia Wang, Yongjun Cao, Daqing Hong, Danni Zheng, Sarah Richtering, Else Charlotte Sandset, Tzen Hugh Leong, Hisatomi Arima, Shariful Islam, Abdul Salam and 3 more

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in International journal of environmental research and public health, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 3 pooled it
3.5field-weighted citation impact, top 8% 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

42 citing papers in PubMed, 3 syntheses or guidelines pooled it, 101 citations in OpenAlex.

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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

13 authors at 4 institutions in 5 countries.

Xia WangThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. xwang@georgeinstitute.org.au.
Yongjun CaoThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. yongjuncao@126.com.
Daqing HongThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. dhong@georgeinstitute.org.au.
Danni ZhengThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. dzheng@georgeinstitute.org.au.
Sarah RichteringThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. srichtering@georgeinstitute.org.au.
Else Charlotte SandsetDepartment of Neurology, Oslo University Hospital, Oslo 0424, Norway. else@sandset.net.
Tzen Hugh LeongThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. hugh-96@hotmail.com.
Hisatomi ArimaDepartment of Preventive Medicine and Public Health, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan. harima@georgeinstitute.org.au.
Shariful IslamThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. sIslam@georgeinstitute.org.au.
Abdul SalamThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. asalam@georgeinstitute.org.au.
Craig AndersonThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. canderson@georgeinstitute.org.au.
Thompson RobinsonDepartment of Cardiovascular Sciences and NIHR Biomedical Research Unit for Cardiovascular Diseases, University of Leicester, Leicester LE1 7RH, UK. tgr2@leicester.ac.uk.
Maree L HackettThe George Institute for Global Health and Royal Prince Alfred Hospital, the University of Sydney, P.O. Box M201, Missenden Road, Sydney, NSW 2050, Australia. mhackett@georgeinstitute.org.au.
The University of Sydney · AUFukuoka University · JPOslo University Hospital · NOUniversity of Leicester · GB

Funding

Department of Health
6 · The paper itself

Abstract

Biologically plausible associations exist between climatic conditions and stroke risk, but study results are inconsistent. We aimed to summarize current evidence on ambient temperature and overall stroke occurrence, and by age, sex, and variation of temperature. We performed a systematic literature search across MEDLINE, Embase, PsycINFO, CINAHL, Web of Science, and GEOBASE, from inception to 16 October 2015 to identify all population-based observational studies. Where possible, data were pooled for meta-analysis with Odds ratios (OR) and corresponding 95% confidence intervals (CI) by means of the random effects meta-analysis. We included 21 studies with a total of 476,511 patients. The data were varied as indicated by significant heterogeneity across studies for both ischemic stroke (IS) and intracerebral hemorrhage (ICH). Pooled OR (95% CI) in every 1 degree Celsius increase in ambient temperature was significant for ICH 0.97 (0.94-1.00), but not for IS 1.00 (0.99-1.01) and subarachnoid hemorrhage (SAH) 1.00 (0.98-1.01). Meta-analysis was not possible for the pre-specified subgroup analyses by age, sex, and variation of temperature. Change in temperature over the previous 24 h appeared to be more important than absolute temperature in relation to the risk of stroke, especially in relation to the risk of ICH. Older age appeared to increase vulnerability to low temperature for both IS and ICH. To conclude, this review shows that lower mean ambient temperature is significantly associated with the risk of ICH, but not with IS and SAH. Larger temperature changes were associated with higher stroke rates in the elderly.

Indexed as

TemperatureAgedAge FactorsFemaleHumansMaleOdds RatioRisk FactorsSex FactorsStrokestrokesystematic reviewtemperatureweather

Identifiers

PMID27420077
PMCPMC4962239
OpenAlexW2465897891

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.