Which components does the Waterlow criteria compare to determine malnutrition?

Which components does the Waterlow criteria compare to determine malnutrition?

• A. Head circumference and arm circumference
• B. Actual weight and length to expected standards
• C. Caloric intake and energy expenditure
• D. Body mass index and waist circumference

Answer: (B)

The key idea is that malnutrition is assessed by how a child’s growth measurements stack up against standard references. The Waterlow criteria use actual measurements of weight and length (or height) and compare them to expected values for the child’s age. This approach lets us classify malnutrition based on how weight relates to length/height and how length/height relates to age. Specifically, by comparing weight-for-length (or weight-for-height) we identify wasting (acute malnutrition), by comparing length/height-for-age we identify stunting (chronic malnutrition), and by comparing weight-for-age we identify underweight. So using actual weight and length/height against reference standards covers these essential anthropometric assessments. That’s why the best choice describes comparing actual weight and length to expected standards. Other options involve measurements or concepts not used in the Waterlow method (like head or arm circumference, caloric intake versus expenditure, or BMI with waist measurements).

The key idea is that malnutrition is assessed by how a child’s growth measurements stack up against standard references. The Waterlow criteria use actual measurements of weight and length (or height) and compare them to expected values for the child’s age. This approach lets us classify malnutrition based on how weight relates to length/height and how length/height relates to age.

Specifically, by comparing weight-for-length (or weight-for-height) we identify wasting (acute malnutrition), by comparing length/height-for-age we identify stunting (chronic malnutrition), and by comparing weight-for-age we identify underweight. So using actual weight and length/height against reference standards covers these essential anthropometric assessments.

That’s why the best choice describes comparing actual weight and length to expected standards. Other options involve measurements or concepts not used in the Waterlow method (like head or arm circumference, caloric intake versus expenditure, or BMI with waist measurements).