What is the normal growth curve?

Normal growth is the progression of changes in height, weight, and head circumference that are compatible with established standards for a given population. The progression of growth is interpreted within the context of the genetic potential for a particular child [1].

How do you read a growth curve?

Reading the lines Age is at the top and bottom of the chart, and length and weight are along the left and right sides. The curved lines show the percentile numbers, or patterns of growth. The percentile number means that your child’s growth exceeds that percentage of other children their age.

What are CDC growth charts based on?

Weight, stature, length and head circumference are commonly used to assess size and growth. When any of these measures are combined with age or length/stature the result is an anthropometric index (for example, weight-for-age). The CDC Growth Charts reflect five anthropometric indices that are gender specific.

What is J shaped growth curve?

J-shaped growth curve A curve on a graph that records the situation in which, in a new environment, the population density of an organism increases rapidly in an exponential or logarithmic form, but then stops abruptly as environmental resistance (e.g. seasonality) or some other factor (e.g. the end of the breeding …

How do you plot weight and height for a growth chart?

Find the child’s age on the horizontal axis. When plotting weight-for-length, find the length on the horizontal axis. Use a straight edge or right-angle ruler to draw a vertical line up from that point. Find the appropriate measurement (weight, length, stature, or BMI) on the vertical axis.

Should height and weight percentiles match?

To get a clear picture of growth, your doctor will also consider the relationship between weight and length. While the percentiles don’t have to match up exactly, they should be within a 10 to 20 percent range of each other.

How do I read CDC growth chart?

Make a small dot where the two lines intersect. that indicate the rank of the child’s measurement. For example, when the dot is plotted on the 95th percentile line on the CDC BMI-for-age growth chart, it means that 5 of 100 children (5%) of the same age and sex in the reference population have a higher BMI-for-age.

What is the U shaped curve?

The U-shaped curve usually refers to the nonlinear relationship between two variables, in particular, a dependent and an independent variable. Because many analytic methods assume an underlying linear relationship, systematic deviation from linearity can lead to bias in estimation.