1. Use parents’ height for prediction. The heritability of height is 0.75, which means that 75% of adult height depends on genetics and only 25% depends on factors such as environment. Generally speaking, those with taller parents will have taller children; those with shorter parents will have shorter children. Based on this, the adult height of a child can be calculated with the following formula:

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Daughter’s adult height (cm) = (father’s height multiplied by 0.923 + mother’s height) divided by 2 < /p>

2. Use the age and height of children (nutrition products for children and nutritional information for children and adolescents) to make predictions. Based on long-term observation data, British scholars found that the following correlations exist between children's height at various ages and adult height: 0.27 at birth; 0.67 at 1 year old; 0.75 at 2 years old; 0.79 at 3 years old; and 0.79 at 3 years old. The correlation value no longer increases. Based on this, the following formula is designed:

Adult height of girls (cm) = 1.29 multiplied by h3 + 42.3 (cm)

In the formula, h3 is the measured value of height at the age of 3 (cm)

Another scholar believes that the height of most children at the age of 2 has the highest correlation with their adult height. His formula is:

Girls’ adult height (cm) = 0.545h2+0.544a+25.63 (cm)

In the formula, h2 is the height at 2 years old; a is (father’s height + mother’s height) divided by 2.

Some scholars believe that when predicting a girl’s adult height, the age of menarche must be taken into account. Early-maturing girls have menarche early. Although they are taller than girls of the same age at that time, their adult height is often shorter than that of late-maturing girls. Therefore, girls should use the following formula: hm=30.09-1.58 times am+0.983 Multiply by ht where hm is the adult height, am is the age at menarche, and ht is the height at menarche.

3. Use foot length to make predictions. This is compiled based on the foot length test data of more than 10,000 urban boys and girls and teenagers aged 7 to 25 in 16 provinces and cities across the country, and can predict adult height.

4. Use bone age for prediction. In this method, the bone age should be calculated under the guidance of a doctor, and then the bone age index is added to the formula calculated by the multiple regression equation for predicting adult height.