Evidence map›Paper›PMID 25631575›Full record

ArticleInternational journal of occupational and environmental health

Changes in kidney function among Nicaraguan sugarcane workers.

Rebecca L Laws, Daniel R Brooks, Juan José Amador, Daniel E Weiner, James S Kaufman, Oriana Ramírez-Rubio, Alejandro Riefkohl, Madeleine K Scammell, Damaris López-Pilarte, José Marcel Sánchez and 2 more

Open access · greenAbstract read
In one paragraph

Article in International journal of occupational and environmental health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 1 pooled it
10.2field-weighted citation impact, top 1% 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

72 citing papers in PubMed, 1 synthesis or guideline pooled it, 124 citations in OpenAlex.

  1. Pooled it
  2. Hydration Interventions Among Agricultural Workers: A Pilot Study.Journal of occupational and environmental medicine · 2022
    Trial
  3. Trial
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Heat-induced kidney disease: Understanding the impact.Journal of internal medicine · 2025
    Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Kidney Function in Rice Workers Exposed to Heat and Dehydration in Costa Rica.International journal of environmental research and public health · 2022
    Article
  20. Article

12 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 2 countries.

Rebecca L Laws
Daniel R Brooks
Juan José Amador
Daniel E Weiner
James S Kaufman
Oriana Ramírez-Rubio
Alejandro Riefkohl
Madeleine K Scammell
Damaris López-Pilarte
José Marcel Sánchez
Chirag R Parikh
Michael D McClean
Boston University · USTufts Medical Center · USVA NY Harbor Healthcare System · USYale University · US

Funding

Environmental Epidemiology in Community SettingsT32ES014562 · NIEHS · BOSTON UNIVERSITY MEDICAL CAMPUS · PI Birgit Gunhild Claus Henn · 2006 to 2026
$7.7M
NIEHS NIH HHS T32 ES014562
6 · The paper itself

Abstract

backgroundThere is an epidemic of chronic kidney disease (CKD) of unknown etiology in Central American workers.

objectivesTo investigate changes and job-specific differences in kidney function over a 6-month sugarcane harvest season, explore the potential role of hydration, and measure proteinuria.

methodsWe recruited 284 Nicaraguan sugarcane workers performing seven distinct tasks. We measured urine albumin and serum creatinine and estimated glomerular filtration rate (eGFR).

resultseGFR varied by job and decreased during the harvest in seed cutters (-8·6 ml/min/1·73 m(2)), irrigators (-7·4 ml/min/1·73 m(2)), and cane cutters (-5·0 ml/min/1·73 m(2)), as compared to factory workers. The number of years employed at the company was negatively associated with eGFR. Fewer than 5% of workers had albumin-to-creatinine ratio (ACR) >30 mg/g.

conclusionsThe decline in kidney function during the harvest and the differences by job category and employment duration provide evidence that one or more risk factors of CKD are occupational.

Indexed as

FarmersSaccharumAdolescentAdultAlbuminuriaCreatinineFemaleGlomerular Filtration RateHumansKidney DiseasesMaleMiddle AgedNicaraguaOccupational DiseasesProteinuriaYoung AdultCreatinineChronic kidney disease,Chronic kidney disease of nontraditional etiology,Estimated glomerular filtration rate,Mesoamerican Nephropathy,Serum creatinine,Tubulointerstitial

Identifiers

PMID25631575
PMCPMC4597013
OpenAlexW2125784583

What OpenQuestion holds

Textmetadata
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.