height prediction

Height prediction is a method that can be used to predict a person's future height. According to demographic data, the child's future height can be predicted by knowing the height of the parent. Moreover, because the height is greatly influenced by heredity, the accuracy of the prediction is high. It includes the current height prediction, the length of the foot and the height prediction, and the height prediction of the parents. Basic Information Specialist classification: growth and development check classification: physical examination Applicable gender: whether men and women apply fasting: not fasting Reminder: Requirements for inspection: Actively cooperate with the doctor's work. Normal value The predicted height is roughly the same as the actual height. Clinical significance The abnormal result predicts that the height is consistent with the actual height, and the height is predicted to be inconsistent with the actual height. Children and babies need to be examined. Low results may be diseases: asymmetrical body in children - short stature - sexual developmental syndrome considerations Taboo before inspection: None. Requirements for inspection: Actively cooperate with the doctor's work. Inspection process 1. Use the child's body length to predict the height of adulthood: · Male height = length at birth (cm) ÷ 0.2949. · Female height = length at birth (cm) ÷ 0.3109. Pay attention to this formula: It is only suitable for normal full-term newborns; if the body length data is accurate to 0.1 cm, the height prediction will be more accurate. · Male height = height at 3 years old × 0.545 + average height of parents × 0.544 + 37.69 (cm). · Female height = height at 3 years old × 0.545 + average height of parents × 0.544 + 25.63 (cm). 2, using the height of the parents to predict the baby's height calculation formula: The height of a child depends to a large extent on heredity. In general, when children grow up to adulthood in a good living environment, 75% of their height depends on genetic factors, and only 25% depends on environmental factors. The Czechoslovakia Havlicec concluded that the formula for predicting the height of a child with the height of the parents is: Son height = (father height + mother height) × 1.08/2. Daughter height = (father height × 0.923 + mother height) / 2. In order to make this prediction formula more suitable for China's national conditions, China's scientific workers "foreign use for the Chinese", according to the relationship between the Han children in the central region of China and the height of their parents, the coefficient in the formula was changed to male 1.11 ~ 1.12, female 0.948 ~ Between 0.980, in this way, the calculated results are more in line with the actual situation in China. The above formula is generally consistent with the genetic principle of "high height, high height, high height, short height, short height and short height". 3. Predict the height method with the length of the foot: When predicting height with the length of the foot, first measure the current length of the child predicted, and then find the same or similar length of the foot in the first vertical line from the left of the same gender table, and in the table The age at which the predicted person is found in a row, and then down, the data at the intersection of the predicted person's length is the predicted height in adulthood. Adult height = 13 years old when the length is × 7. Using this method to predict your child's future height is simpler and more convenient, with an error of no more than 3 cm. 4, using the bone age prediction method: Predicting height with bone age is by far the most accurate method. Everyone from child to adult, there is a corresponding "skeletal age" for different ages, referred to as bone age. There is a fixed proportional relationship between bone age and minor height. Filming and analysis of the bone age: The weak hand (usually the left hand) of the testee was taken to take an X-ray film including the ruler, the end of the tibia and the wrist, palm and phalanx. When filming, the hand is required to be 90 cm from the lens, the palm is up, the position is flat, and the forearm is in line with the middle finger. The height of the testee was accurately measured at the time of filming, and then his bone age development percentage was found in the bone age and final height percentage table. The type of physical development is based on the relationship between bone age and natural age. “Normal” means that the bone age is no more than one year than the natural age. “Premature maturity” means that the bone age is one year older than the natural age, and “late maturity” means that the bone age is less than one year longer than the natural age. Not suitable for the crowd Inappropriate crowd: None.