Growth Rate Over Time
A child's growth rate over time is a better indicator of normal growth than his or her height at a particular point in time. The speed of growth is very fast in the first 3 years of life. But from around 3 years of age, until about 9 or 10 years of age, the speed of growth slows down a little more each year.
Then, at puberty, there is a rapid increase in growth rate - the pubertal growth spurt - during which the speed of growth usually doubles. By regularly measuring height, weight, and rate (velocity) of growth, your child's doctor will be able to determine if your child's growth is following a normal pattern.
The rate of growth is calculated by subtracting a previous height measurement from the current measurement, then dividing by the time between the two measurements.
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