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Evaluation of basic anthropometric data by empirical formulas

The assessment method is based on a comparison of the anthropometric indicators of a child with the appropriate average age values ​​calculated using empirical formulas (Vorontsov I.M., 1986). The advantages of the method are simplicity and convenience, the disadvantages are a large error. Formulas for the approximate calculation of basic anthropometric data in children of the first year of life 1). Body length • The body length of a 6-month-old baby is 66cm, 2.5cm is deducted for each missing month, 1.5cm is added for every month over 6 months.

• Body length in 1 half year of life: 66 - 2.5cm x (6 - n)

• Body length in the 2nd half of life: 66 + 1.5cm x (n - 6),

where n is the number of months of life

. 2). Body mass

• Body weight in the 1st half of life: body weight at birth + 800g x n,

Body weight in the 2nd half of life



Medical history and examination in pediatrics

•: birth weight + 800g x 6 + 400g x (n - 6),

where n is the number of months of life, 800g and 400g is the average monthly increase in body weight for the first and second half of life, respectively.

• The body weight at 6 months is 8200g, for each month up to 6 months, 800g is deducted, for each month over 6 months 400g is added.

3). Chest circumference Chest circumference at 6 months is 45cm, for each missing month 2cm is deducted, for each month over 6 months, 0.5cm is added:

• Chest circumference in the 1st half of life: 45cm - 2cm x (6 - n)

• Chest circumference in the 1st half of life: 45cm + 0.5cm x (n - 6),

where n is the number of months of life.


4). Head circumference

The head circumference at 6 months is 43 cm, for each month over 1.5 cm is deducted, for each month over 6 months, 0.5 cm is added:

• Head circumference in the 1st half of life: 43cm - 1.5cm x (6 - n)

• Head circumference in the 2nd half of life: 43cm + 0.5cm x (n - 6),

where n is the number of months of life.

Formulas for calculating basic anthropological data in children older than 1 year

1). Body Length (1 to 6 years)

The body length of a 4-year-old child is 100cm, 6cm is deducted for each missing year, 7cm is added for every year over 4 years.

2). Body length (6 to 15 years)

The body length of an 8-year-old child is 130cm, 7cm is deducted for each missing year, 5cm is added for each subsequent year.

3). Body weight (2-12 years)

The body weight at 5 years is 19 kg, for every year up to 5 years 2 kg is taken away, for every year over 5 years 3 kg is added.

4). Body weight (over 12 years)

It is determined by the formula: 5 xn - 20kg, where n is the age in years.

5). Chest circumference

A 10-year-old child has a chest circumference of 63 cm. For each year up to 10 years, 1.5 cm is deducted, for each over 10 years, 3 cm is added.

6). Head circumference

At 5 years, the head circumference is 50 cm, for each year up to 5 years, 1 cm is deducted, for each year over 5 years, 0.6 cm is added.
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Evaluation of basic anthropometric data by empirical formulas

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