Beyond Wasting: Using the Composite Index of Anthropometric Failure to Reveal the True Burden of Undernutrition Among Under-Five Children in Sokoto IDP Camps

In the crowded, resource-strained world of humanitarian aid, measuring the health of young children is a matter of life and death. For decades, aid workers have relied on three specific ways to check if a child is starving. They look at whether a child is too short for their age, a sign of long-term hunger. They check if a child is too thin for their height, a sign of recent, acute starvation. And they weigh the child to see if they are too light for their age, which combines both issues. Usually, when a child is found to be too thin for their height, they are flagged as needing urgent food and medical help. This single check has become the standard rule for emergency camps because it is fast and easy to do. However, this method assumes that if a child is not dangerously thin right now, they are likely okay. This assumption leaves a dangerous blind spot: a child could be suffering from long-term stunting or be underweight without being acutely wasted, and thus slip through the cracks of a system designed to catch only the most immediate cases of starvation.

A team of researchers from Usmanu Danfodiyo University and Northwest University in Nigeria decided to test whether this single-check system was missing too many children in the Internally Displaced Persons camps of Sokoto. They focused on children under five years old living in two specific camps, Dundaye and Ramen Kura, where families have fled conflict and are living in difficult conditions. Instead of just looking at one sign of malnutrition, the researchers used a broader tool called the Composite Index of Anthropometric Failure. This method does not just look for one problem; it looks for any combination of problems. It asks if a child is failing on any of the three measures—being too short, too thin, or too light—and counts them as needing help if they fail on even one of them. By using this wider net, the team wanted to see how many children were being overlooked by the standard, single-indicator approach.

The researchers measured the weight and height of 263 children in these camps. After carefully checking their data to ensure the measurements made biological sense, they analyzed 219 children who had complete and reliable records. They first applied the standard rule, checking how many children were classified as wasted, stunted, or underweight individually. Then, they applied the composite index, which counted a child as failing if they showed signs of any of these three conditions. The results were stark. When the researchers looked at the children through the lens of the composite index, they found that nearly 69 percent of the children were suffering from some form of undernutrition. This was a much higher number than any single measure had shown. The standard measure for acute wasting, which is the most common tool used in emergencies, identified only about 39 percent of the children as needing help. The gap was even wider when compared to the measure for stunting, which found about 47 percent, and underweight, which found about 52 percent.

The most revealing part of the study was looking at who was being missed. The researchers found that nearly 65 children were identified as needing help by the composite index but were completely invisible to the standard wasting check. These children were not dangerously thin at that moment, but they were either too short for their age, too light for their age, or both. In fact, almost one-quarter of all the children in the study were failing on all three measures simultaneously, representing the most severe form of nutritional distress. The statistical analysis confirmed that this difference was not a random fluke; the number of children missed by the single-indicator approach was so large that it was statistically impossible to ignore. The study showed that relying on just one sign of hunger is like looking for a needle in a haystack while only checking the top layer; the composite index digs deeper and finds the needles hidden beneath.

This finding has a direct and serious implication for how aid is delivered in places like Sokoto. In the immediate chaos of a new emergency, the fast, single-check method remains useful for triage. However, in protracted situations where families have been displaced for a long time, sticking to just one measure leaves a vast number of vulnerable children without support. The study suggests that in these stable but difficult camp settings, aid organizations should supplement their rapid checks with broader assessments that capture the full picture of a child's nutritional health. By doing so, they can ensure that the children who are suffering from chronic hunger, even if they are not yet acutely wasted, are not left behind. The research confirms that the true burden of undernutrition in these camps is far heavier than the standard numbers suggest, and that a more complete view is necessary to protect the most vulnerable.