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Association Between Anthropometric and Hematological Parameters and the Diagnosis of Intestinal Parasitosis in
Bruno Freire1, Alessandra Marques Sohn1, Ricardo Rojas-Humpire1
1School of Medicine, Faculty of Health Sciences, Universidad Peruana Unión (UPeU), Lima 15464, Peru.
Insights
This study explored anthropometric and lab markers for diagnosing childhood parasitosis in Peru. Diagnostic models showed promise for Enterobius vermicularis, potentially reducing reliance on stool exams.
Area of Science:
- Pediatric infectious diseases
- Clinical diagnostics
- Public health research
Background:
- Parasitosis remains a significant health concern in children, particularly in resource-limited settings.
- Traditional diagnostic methods like copro-parasitological examinations can be resource-intensive and have limitations.
- Identifying alternative diagnostic markers is crucial for effective disease management.
Purpose of the Study:
- To investigate the association between anthropometric measurements and laboratory test results with the diagnosis of childhood parasitosis.
- To develop and evaluate diagnostic models for parasitosis that do not solely rely on copro-parasitological examinations.
Main Methods:
- A cross-sectional study involving 1894 children (0-14 years) in Lima, Peru.
- Analysis of anthropometric data (BMI, weight, height) and laboratory parameters (hemoglobin, hematocrit, eosinophils, etc.).
- Multivariable Poisson regression and ROC curve analysis to identify associations and assess diagnostic model performance.
Main Results:
- A high prevalence of parasitosis (41.9%) was observed, with common infections including Blastocystis hominis and Giardia duodenalis.
- Male sex, specific age groups (2-5 and >5 years), elevated eosinophil percentage, and low height-for-age were associated with increased parasitosis risk.
- Diagnostic models showed satisfactory predictive value only for Enterobius vermicularis, linked to BMI and hematocrit/hemoglobin levels.
Conclusions:
- Diagnostic models utilizing anthropometric and laboratory data show potential for identifying Enterobius vermicularis infections.
- These findings suggest a possible reduction in the need for copro-parasitological examinations in specific contexts.
- Further research is warranted to refine and validate these alternative diagnostic approaches for broader application.
Objective:
This study aims to determine the association between anthropometric values and laboratory tests with parasitosis diagnosis and identify diagnostic models for parasitosis without relying on copro-parasitological examinations.
Methods:
Data were collected from 1894 children aged 0-14 who attended a medical center for low-income children in Lima, Peru, between 2021 and 2022. Anthropometric data (BMI, weight, height), laboratory data (red blood cells, hemoglobin, platelets, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, eosinophils), and parasitological examination results were analyzed. Prevalence ratios for the association between parasitosis and each anthropometric and laboratory variable were estimated using multivariable Poisson regression. Regression models were developed for each type of parasite found, and the diagnostic value was assessed using ROC curves.
Results:
A high prevalence of parasitosis was identified (41.9%), including Blastocystis hominis (29.1%), Endolimax nana (7.76%), Entamoeba coli (5.97%), Giardia duodenalis (6.44%), and Enterobius vermicularis (1.85%). It was found that the male sex (PRa 1.18), the age group of 2-5 years (PRa 4.83) and >5 years (PRa 4.59), the percentage of eosinophils (PRa 1.02 for every 1% increase), and height/age with -5 SD (PRa 1.34) were associated with a greater risk of parasitosis. Satisfactory values were only shown for diagnostic models associating Enterobius vermicularis and BMI, with a diagnostic value of 70.9% and 70.2% for a BMI < 12 and hematocrit > 29.8%, and BMI < 12 and hemoglobin < 10.6 g/L, respectively.
Conclusions:
Satisfactory diagnostic value models were only found for parasitosis by Enterobius vermicularis, suggesting the potential for reducing reliance on copro-parasitological exams in resource-limited settings.
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