Evidence map›Paper›PMID 28765127›Full record

ArticleBMJ open2017

Neighbouring green space and mortality in community-dwelling elderly Hong Kong Chinese: a cohort study.

Dan Wang, Kevin Ka-Lun Lau, Ruby Yu, Samuel Y S Wong, Timothy T Y Kwok, Jean Woo

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 5 pooled it
3.7field-weighted citation impact, top 7% 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

40 citing papers in PubMed, 5 syntheses or guidelines pooled it, 108 citations in OpenAlex.

  1. Pooled it
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  3. Impacts of Urban Green on Cardiovascular and Cerebrovascular Diseases-A Systematic Review and Meta-Analysis.International journal of environmental research and public health · 2023
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  12. The mortality impacts of greening Italy.Nature communications · 2024
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  16. Greenness exposure: beneficial but multidimensional.Breathe (Sheffield, England) · 2023
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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

6 authors at 2 institutions in 1 country.

Dan WangThe Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China.
Kevin Ka-Lun LauCUHK Jockey Club Institute of Ageing, The Chinese University of Hong Kong, Hong Kong, China.
Ruby YuCUHK Jockey Club Institute of Ageing, The Chinese University of Hong Kong, Hong Kong, China.
Samuel Y S WongThe Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China.
Timothy T Y KwokCUHK Jockey Club Institute of Ageing, The Chinese University of Hong Kong, Hong Kong, China.
Jean WooCUHK Jockey Club Institute of Ageing, The Chinese University of Hong Kong, Hong Kong, China.
Hong Kong Jockey Club · CNChinese University of Hong Kong · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveGreen space has been shown to be beneficial for human wellness through multiple pathways. This study aimed to explore the contributions of neighbouring green space to cause-specific mortality.

methodsData from 3544 Chinese men and women (aged ≥65 years at baseline) in a community-based cohort study were analysed. Outcome measures, identified from the death registry, were death from all-cause, respiratory system disease, circulatory system disease. The quantity of green space (%) within a 300 m radius buffer was calculated for each subject from a map created based on the Normalised Difference Vegetation Index. Cox proportional hazard models adjusted for demographics, socioeconomics, lifestyle, health conditions and housing type were used to estimate the HRs and 95% CIs.

resultsDuring a mean of 10.3 years of follow-up, 795 deaths were identified. Our findings showed that a 10% increase in coverage of green space was significantly associated with a reduction in all-cause mortality (HR 0.963, 95% CI 0.930 to 0.998), circulatory system-caused mortality (HR 0.887, 95% CI 0.817 to 0.963) and stroke-caused mortality (HR 0.661, 95% CI 0.524 to 0.835), independent of age, sex, marital status, years lived in Hong Kong, education level, socioeconomic ladder, smoking, alcohol intake, diet quality, self-rated health and housing type. The inverse associations between coverage of green space with all-cause mortality (HR 0.964, 95% CI 0.931 to 0.999) and circulatory system disease-caused mortality (HR 0.888, 95% CI 0.817 to 0.964) were attenuated when the models were further adjusted for physical activity and cognitive function. The effects of green space on all-cause and circulatory system-caused mortality tended to be stronger in females than in males.

conclusionHigher coverage of green space was associated with reduced risks of all-cause mortality, circulatory system-caused mortality and stroke-caused mortality in Chinese older people living in a highly urbanised city.

Indexed as

Cause of DeathEnvironment DesignPlantsResidence CharacteristicsAgedAged, 80 and overAsian PeopleCardiovascular DiseasesCitiesFemaleHong KongHousingHumansIndependent LivingMaleProportional Hazards ModelsAge-friendlyAgeing in placeElderlyGreen spaceMortalityNDVI.

Identifiers

PMID28765127
PMCPMC5642810
OpenAlexW2740175223

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.