Evidence map›Paper›PMID 33130166›Full record

ArticleEnvironmental research2021

Neighborhood greenness and burden of non-communicable diseases in Sub-Saharan Africa: A multi-country cross-sectional study.

Hari S Iyer, Peter James, Linda Valeri, Francis Bajunirwe, Joan Nankya-Mutyoba, Marina Njelekela, Faraja Chiwanga, Vikash Sewram, IkeOluwapo Ajayi, Clement Adebamowo and 5 more

Abstract read
In one paragraph

Article in Environmental research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Impact of Urban Green on Population Health in Sub-Saharan Africa: A Scoping Review.Journal of urban health : bulletin of the New York Academy of Medicine · 2025
    Article
  5. Greenspaces And Cardiovascular Health.Circulation research · 2024
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
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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

15 authors.

Hari S IyerDepartment of Medical Oncology, Dana-Farber Cancer Institute, Boston, USA; Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, USA. Electronic address: Hari_Iyer@dfci.harvard.edu.
Peter JamesDepartment of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, USA.
Linda ValeriDepartment of Biostatistics, Columbia University Mailman School of Public Health, New York, USA.
Francis BajunirweDepartment of Community Health, Mbarara University of Science and Technology, Mbarara, Uganda.
Joan Nankya-MutyobaDepartment of Epidemiology & Biostatistics, School of Public Health, Makerere University College of Health Sciences, Kampala, Uganda.
Marina NjelekelaDepartment of Physiology, Muhimbili University of Health and Allied Sciences, Dar Es Salaam, Tanzania; Department of Internal Medicine, Muhimbili National Hospital, Dar Es Salaam, Tanzania; Deloitte Consulting Limited, Dar Es Salaam, Tanzania.
Faraja ChiwangaDepartment of Internal Medicine, Muhimbili National Hospital, Dar Es Salaam, Tanzania.
Vikash SewramAfrican Cancer Institute, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
IkeOluwapo AjayiDepartment of Epidemiology and Medical Statistics, Faculty of Public Health, College of Medicine, University of Ibadan, Ibadan, Nigeria.
Clement AdebamowoInstitute of Human Virology, Abuja, Nigeria; Greenebaum Comprehensive Cancer Center and Institute of Human Virology, University of Maryland School of Medicine, Baltimore, USA.
Shona DalalDepartment of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, USA.
Todd G ReidMedia Lab and Connection Science, Massachusetts Institute of Technology, Boston, USA; Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, USA.
Timothy R RebbeckDepartment of Medical Oncology, Dana-Farber Cancer Institute, Boston, USA; Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, USA.
Hans-Olov AdamiDepartment of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, USA; Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Clinical Effectiveness Research Group, Institute of Health and Society, University of Oslo, Oslo, Norway.
Michelle D HolmesDepartment of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, USA; Channing Division of Network Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, USA.

Funding

Training Program in Cancer EpidemiologyT32CA009001 · NCI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI A. Heather Eliassen, Meir Stampfer · 1985 to 2026
$17.3M
Nutritional Assessment of Cancer Risk in African MenU01CA184374 · NCI · DANA-FARBER CANCER INST · PI REBBECK, TIMOTHY R · 2015 to 2019
$9.1M
African Collaborative Center for Microbiome and Genomics Research (ACCME)U54HG006947 · NHGRI · INSTITUTE OF HUMAN VIROLOGY · PI ADEBAMOWO, CLEMENT ADEBAYO · 2013 to 2018
$5.7M
Built Environment Assessment through Computer visiON (BEACON): Applying Deep Learning to Street-Level and Satellite Images to Estimate Built Environment Effects on Cardiovascular HealthR01HL150119 · NHLBI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI JAMES, PETER · 2020 to 2024
$3.9M
High Resolution Measures of Behavioral Cancer Risk Factors From Mobile TechnologyR00CA201542 · NCI · HARVARD PILGRIM HEALTH CARE, INC. · PI JAMES, PETER · 2017 to 2019
$747k
NCI NIH HHS R00 CA201542NCI NIH HHS T32 CA009001NCI NIH HHS U01 CA184374NHGRI NIH HHS U54 HG006947NHLBI NIH HHS R01 HL150119
6 · The paper itself

Abstract

Population growth, demographic transitions and urbanization in sub-Saharan Africa (SSA) will increase non-communicable disease (NCD) burden. We studied the association between neighborhood greenness and NCDs in a multi-country cross-sectional study. Among 1178 participants, in adjusted models, a 0.11 unit NDVI increase was associated with lower BMI (β: -1.01, 95% CI: -1.35, -0.67), and lower odds of overweight/obesity (aOR: 0.73, 95% CI: 0.62, 0.85), diabetes (aOR: 0.77, 95% CI: 0.62, 0.96), and having ≥3 allostatic load components compared to none (aOR: 0.66, 95% CI: 0.52, 0.85). Except for diabetes, these remained statistically significant after Bonferroni correction. We observed no association between NDVI and hypertension or cholesterol. Our findings are consistent with health benefits of neighborhood greenness reported in other countries, suggesting greening strategies could be considered as part of broader public health interventions for NCDs.

Indexed as

Noncommunicable DiseasesAfrica South of the SaharaCross-Sectional StudiesHumansOverweightRisk FactorsEnvironmental epidemiologyGreennessNon-communicable diseasesObesitySub-saharan AfricaVegetation

Identifiers

PMID33130166
PMCPMC8085185

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.