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The absolute value is a mathematical tool that represents the distance of a number from zero on the number line, regardless of its sign. In the context of inequalities, absolute value expressions help define a range of permissible values or boundaries for a variable. These inequalities are commonly used in scientific modeling and data interpretation, where variability within or beyond a certain threshold must be captured precisely.An absolute value inequality of the form ∣x∣ ≤...
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The graph of the equation where y equals x squared forms a curve known as a parabola. This curve acts as a boundary in the coordinate plane, dividing it into distinct regions based on the relative position of points.When the equality sign in the equation is replaced with an inequality—such as greater than, less than, greater than or equal to, or less than or equal to—the graphical representation changes from a single curve into a broader shaded area that signifies the set of all...
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A nonlinear inequality describes a comparison involving an expression that curves or behaves more complexly than a straight line. These inequalities often appear in forms that include squares, products, or variables in the denominator.To solve such an inequality, one starts by rewriting it so that zero appears on one side. For example, the inequality:  can be factored as: This form makes it easier to identify the values that cause the expression to equal zero. In this case, the...
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Little kidneys amid large global inequities.

Judith Exantus1,2,3, Maolynne Miller4, Valerie A Luyckx5,6,7,8,9

  • 1Department of Pediatrics, Faculté de Médecine Et de Pharmacie, Université d'Etat d'Haïti, Port-Au-Prince, Haiti.

Pediatric Nephrology (Berlin, Germany)
|February 11, 2026
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Summary

Chronic kidney disease (CKD) in children is a major health issue with limited awareness and unequal access to care. Early diagnosis and strengthened health systems are crucial for better child kidney health outcomes.

Keywords:
Access to careInequityKidney diseaseOne health approachSocial determinants of healthSustainable development goals

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Area of Science:

  • Pediatric Nephrology
  • Public Health
  • Global Health Equity

Background:

  • Chronic kidney disease (CKD) is a significant, yet underrecognized, non-communicable disease in children globally.
  • Kidney dysfunction is a primary metabolic risk factor for mortality in pediatric populations.
  • Inequities in diagnosis and care access for childhood CKD are prevalent worldwide, particularly in low-resource settings.

Purpose of the Study:

  • To highlight the global burden of CKD in children.
  • To emphasize the need for increased community awareness and early diagnosis.
  • To advocate for strengthened health systems and equitable access to pediatric kidney care.

Main Methods:

  • The study synthesizes existing data and expert knowledge on childhood CKD.
  • It reviews the impact of social determinants of health on kidney disease risk.
  • It examines the role of health systems, NGOs, and government policies in addressing the issue.

Main Results:

  • Childhood CKD risk originates prenatally and is exacerbated by socioeconomic factors like poverty and poor nutrition.
  • Late presentation and lack of access to care are common, leading to catastrophic health expenditures for families.
  • Strengthening health systems from antenatal care to tertiary services is essential for early identification and management.

Conclusions:

  • A holistic approach integrating social determinants, the Sustainable Development Goals, and a One Health perspective is vital for improving child kidney health.
  • Governments must prioritize measuring and addressing the burden of childhood CKD.
  • Enhanced public health measures and equitable access to care are critical for mitigating inequities and promoting child wellbeing.