Evidence map›Paper›PMID 26781954›Full record

ArticleGlobal health action2016

Characterizing the relationship between temperature and mortality in tropical and subtropical cities: a distributed lag non-linear model analysis in Hue, Viet Nam, 2009-2013.

Tran Ngoc Dang, Xerxes T Seposo, Nguyen Huu Chau Duc, Tran Binh Thang, Do Dang An, Lai Thi Minh Hang, Tran Thanh Long, Bui Thi Hong Loan, Yasushi Honda

Open access · goldAbstract read
In one paragraph

Article in Global health action, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 2 pooled it
5.7field-weighted citation impact, top 4% 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

30 citing papers in PubMed, 2 syntheses or guidelines pooled it, 55 citations in OpenAlex.

  1. The effect of high temperatures on risk of hospitalization in northern Vietnam.Environmental science and pollution research international · 2022
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  5. The effect modification of PMEnvironmental health and preventive medicine · 2024
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  11. The association between temperature and cause-specific mortality in the Klang Valley, Malaysia.Environmental science and pollution research international · 2021
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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

9 authors at 4 institutions in 2 countries.

Tran Ngoc DangDepartment of Health Care Policy and Management, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan.
Xerxes T SeposoDepartment of Health Care Policy and Management, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan.
Nguyen Huu Chau DucDepartment of Global Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
Tran Binh ThangInstitute for Community Heath Research, Hue University of Medicine and Pharmacy, Hue City, Viet Nam.
Do Dang AnDepartment of International Cooperation, Ministry of Health, Hanoi, Viet Nam.
Lai Thi Minh HangDepartment of Epidemiology and Preventive Medicine, Graduate School of Medical and Dental Sciences, University of Kagoshima, Kagoshima, Japan.
Tran Thanh LongDepartment of Epidemiology and Preventive Medicine, Graduate School of Medical and Dental Sciences, University of Kagoshima, Kagoshima, Japan.
Bui Thi Hong LoanDepartment of Global Public Health, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan.
Yasushi HondaFaculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan.
University of Tsukuba · JPHue University · VNMinistry of Health · VNTokyo Medical and Dental University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe relationship between temperature and mortality has been found to be U-, V-, or J-shaped in developed temperate countries; however, in developing tropical/subtropical cities, it remains unclear.

objectivesOur goal was to investigate the relationship between temperature and mortality in Hue, a subtropical city in Viet Nam.

designWe collected daily mortality data from the Vietnamese A6 mortality reporting system for 6,214 deceased persons between 2009 and 2013. A distributed lag non-linear model was used to examine the temperature effects on all-cause and cause-specific mortality by assuming negative binomial distribution for count data. We developed an objective-oriented model selection with four steps following the Akaike information criterion (AIC) rule (i.e. a smaller AIC value indicates a better model).

resultsHigh temperature-related mortality was more strongly associated with short lags, whereas low temperature-related mortality was more strongly associated with long lags. The low temperatures increased risk in all-category mortality compared to high temperatures. We observed elevated temperature-mortality risk in vulnerable groups: elderly people (high temperature effect, relative risk [RR]=1.42, 95% confidence interval [CI]=1.11-1.83; low temperature effect, RR=2.0, 95% CI=1.13-3.52), females (low temperature effect, RR=2.19, 95% CI=1.14-4.21), people with respiratory disease (high temperature effect, RR=2.45, 95% CI=0.91-6.63), and those with cardiovascular disease (high temperature effect, RR=1.6, 95% CI=1.15-2.22; low temperature effect, RR=1.99, 95% CI=0.92-4.28).

conclusionsIn Hue, the temperature significantly increased the risk of mortality, especially in vulnerable groups (i.e. elderly, female, people with respiratory and cardiovascular diseases). These findings may provide a foundation for developing adequate policies to address the effects of temperature on health in Hue City.

Indexed as

CitiesMortalityTemperatureAdolescentAdultAgedAge DistributionChildChild, PreschoolFemaleGlobal HealthHumansInfantInfant, NewbornMaleMiddle Agedcold effectshigh temperature effectshot effectslow temperature effectstime-series regression

Identifiers

PMID26781954
PMCPMC4716554
OpenAlexW2239743549

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.