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On the BMI-for-age chart, find Sam's age on the horizontal axis and
visually draw a vertical line up from that point, then find his BMI on the
vertical axis and visually draw a horizontal line across from that point.
The point where the two intersect represents Sam's BMI-for-age.
When plotted on the growth chart, Sam's BMI-for-age falls just below
the 25th percentile curve. Percentile indicates the rank of a measure in a
group of 100. This means that of 100 children the same sex and age as Sam,
fewer than 25 children will have a BMI lower than his.
Sam is neither overweight, underweight nor at risk of overweight. When
a childs plotted measurement falls between the 5th and 95th percentiles
it is considered to be in the normal range. Sams BMI-for-age is in the
normal range. When a child's percentile rank falls outside the normal
range (i.e., outside the 5th or 95th percentiles), further evaluation is
needed.
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