Doctors use growth charts to compare a child's measurements with those of other children his age. This helps the doctors determine whether a child's growth is adequate. Boys and girls are plotted on different charts because their growth rates and patterns differ.

For both boys and girls there are two sets of standard charts: one for infants ages 0 to 36 months and another for children ages 2 to 18 years. The charts are a series of percentile curves that show the distribution of growth measurements of children from across the country.

The new charts represent the most recently published (June 2000) standards for U.S. children. By plotting your child's measurements on these charts, doctors are able to compare your child's growth patterns with data collected on thousands of U.S. children. Remember that only those measurements that are obtained in your child's doctor's office or taken by another properly skilled person should be plotted. Home measurements are frequently inaccurate and can lead to faulty data.

For more information, please visit CDC.gov