Prevalence of kidney disease of unknown etiology in agricultural workers, Guatemala
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Objectives. To determine the prevalence of kidney disease of unknown etiology in banana, melon, and tomato workers in north-eastern Guatemala, and to evaluate the usefulness of a cystatin C blood test for early detection of renal disease. Methods. This was a cross-sectional, farm-based study of 462 agricultural workers conducted from June to September 2021. Epidemiological and demographic characteristics of the workers were collected through a self-administered questionnaire. Blood samples were obtained to determine glucose, creatinine and cystatin C levels. Anthropometric and clinical data were also recorded. Results. The prevalence of kidney disease of unknown etiology was 3.03% (95% confidence interval (CI): 1.36–4.70%) based on glomerular filtration rate (GFR-EPI) 2 , with a significantly higher prevalence in banana workers (5.67%; 95% CI: 2.16–9.18%) than melon workers ( p = 0.009) and tomato workers ( p = 0.044). Ten workers (2.16%) had reduced kidney function (GFR-EPI 60–90 mL/min/1.73 m 2 ). The levels of cystatin C showed less variability (coefficient of variation 46.4%) than those of creatinine (coefficient of variation 67.0%), and cystatin C levels in cases with abnormal and reduced kidney function were significantly different from cases with normal kidney function ( p Conclusions. Surveillance of the health of active farm workers and improvement of working conditions, such as sun protection, adequate hydration, and sufficient breaks, are recommended. The significant differences in cystatin C levels between cases with abnormal and reduced kidney function and those with normal kidney function suggest that cystatin C could be a useful measure for early detection of renal disease
Confidence interval · Creatinine · Cystatin · Cystatin C · Etiology · Kidney · Kidney disease · Renal function · Chronic Kidney Disease and Diabetes · Dialysis and Renal Disease Management · Heavy Metal Exposure and Toxicity · Medicine · Epidemiology · Gastroenterology · Internal Medicine · Physiology
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