What we call the three E's are the important categories that relate to essential nutrition of humans and those are eat, exercise, and eliminate. PDIs are the set of measures that we use to evaluate the quality of pediatric care. The way that the PDIs fit inside the three E's is that they ensure a child gets a good and balanced diet for the development of that child. A child needs exercise in order to develop muscles inside the body. And it also helps us regulate the food the child eats so that we can remove some food that may harm or hinder a child's development.
