Tag Archives: SAM

Anthropometry: Height and Weight

Module 8 takes note of other measurements as well. These include height or length (if a child is < 85 cm, measuring their length provides a more accurate measurement) and weight. Since the focus of FoF is to eliminate “hidden hunger”, these measurements provide us with a lot of information about the nutritional status of the women and children we’re meeting. A woman or child may look healthy enough – their bones won’t be visible, or their bellies won’t be swollen (indicators of Marasmus and Kwashiorkor, both of which are types of severe acute malnutrition, or SAM). However, when we have their height/length, weight and age, we can use this information to compare them to healthy individuals of the same age and gender to get a better picture of their health.

There are three indicators that we use:

  1. Height/length for age – when we know a person’s height and their age, we can compare them to the average height for a healthy individual of the same age and gender. If the person is significantly short for his or her age, we call this stunting. It is a sign of chronic malnutrition.
  2. Weight for height – we can use an adult’s weight and height to calculate their body mass index, or BMI. A healthy BMI is anywhere from 18.5-24.9. Anything below 18.5 means a person is malnourished. In children, we compare their weight to the weight of a healthy reference child of the same height. If the child is significantly lighter than the reference child, we call this wasting, which indicates acute malnutrition.
  3. Weight for age – when we know a person’s weight and their age, we can compare them to the average weight for their age and gender group. If the person is light for his or her age, he/she is considered to be underweight.

Here are some pictures from the field.

 

Anthropometry: MUAC

Module 8 of the survey is Anthropometry and Hemoglobin. One of the measurements we take is the mid-upper arm circumference (aka the MUAC). The MUAC is generally regarded as an accurate assessment of nutritional status in adults and children. Also, it’s easy to do in the field.

There are two steps to taking a MUAC measurement. The first involves measuring the length of the upper arm to determine the mid-point of the upper arm. The second is to wrap a band around that point to measure the circumference.

The band tells us two things:

  1. The MUAC in centimetres, and
  2. What degree of malnutrition an individual has, if any. This is possible because the band is divided into three coloured segments that indicate whether an individual is well-nourished (green), suffering from moderate acute malnutrition (MAM) (yellow), or suffering from severe acute malnutrition (SAM) (red).  In children, these divisions are based on how many standard deviations a person’s MUAC is from the mean, which is 13.0 cm. In adults, the cutoffs are 18.5 cm for moderate undernutrition, and < 16.5 cm for severe undernutrition.

Here are some pictures that demonstrate the process. Enjoy!