Evidence map›Paper›PMID 31870716›Full record

ArticleJournal of the American Medical Directors Association2020

Residential Greenness and Frailty Among Older Adults: A Longitudinal Cohort in China.

Anna Zhu, Lijing Yan, Chenkai Wu, John S Ji

Abstract read
In one paragraph

Article in Journal of the American Medical Directors Association, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 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

29 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Green Space and Health in Mainland China: A Systematic Review.International journal of environmental research and public health · 2021
    Pooled it
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  14. China's public health initiatives for climate change adaptation.The Lancet regional health. Western Pacific · 2023
    Review
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  17. Associations between Frailty and Ambient Temperature in Winter: Findings from a Population-Based Study.International journal of environmental research and public health · 2022
    Article
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  19. Sociodemographic Variations in the Availability of Urban Green Spaces in an Older Swedish Population.International journal of environmental research and public health · 2022
    Article
  20. Association between Age-Friendliness of Communities and Frailty among Older Adults: A Multilevel Analysis.International journal of environmental research and public health · 2022
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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.

Anna ZhuEnvironmental Research Center, Duke Kunshan University, Kunshan, China.
Lijing YanGlobal Health Research Center, Duke Kunshan University, Kunshan, China.
Chenkai WuGlobal Health Research Center, Duke Kunshan University, Kunshan, China. Electronic address: chenkai.wu@dukekunshan.edu.cn.
John S JiEnvironmental Research Center, Duke Kunshan University, Kunshan, China; Nicholas School of the Environment, Duke University, Durham, North Carolina. Electronic address: john.ji@dukekunshan.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesFrailty is an accumulation of deficits characterized by reduced resilience to stressors and increased vulnerability to adverse outcomes. There is evolving evidence on the health benefits of residential greenness, but little is known about its impact on frailty.

designA longitudinal cohort study. SETTING AND

participantsWe included older adults aged ≥65 years from the Chinese Longitudinal Healthy Longevity Survey (CLHLS) with a 12-year follow-up.

methodsWe assessed residential greenness by calculating the Normalized Difference Vegetation Index (NDVI) in the 500 m radius around participants' residence. We used 39 self-reported health items to construct a frailty index (FI) as a proportion of accumulated deficits. We defined an FI of ≤0.21 as nonfrail and prefrail, and an FI of >0.21 as frail. We used the mixed effects logistic regression models to examine the association between residential greenness and frailty, adjusted for a number of covariates.

resultsWe had 16,238 participants, with a mean age of 83.0 years (standard deviation: 11.5). The mean baseline NDVI and FI were 0.40, and 0.12, respectively. Compared to the participants living in the lowest quartile of residential greenness, those in the highest quartile had a 14% [odds ratio (OR): 0.86, 95% confidence interval (CI): 0.77, 0.97] lower odds of frailty. The association was stronger among urban vs rural residents. Additionally, each 0.1-unit increase in annual average NDVI was related to a 2% higher odds of improvement in the frailty status (OR: 1.02, 95% CI: 1.00, 1.04). CONCLUSIONS AND IMPLICATIONS: Our study suggests that higher levels of residential greenness are related to a lower likelihood of frailty, specifically in urban areas.

Indexed as

FrailtyAgedAged, 80 and overChinaCohort StudiesHumansLongitudinal StudiesRural Populationfrailtyhealthy longevityNormalized Difference Vegetation IndexResidential greenness

Identifiers

PMID31870716
PMCPMC7303951

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.