LINEARIZING THE GROWTH STANDARD TABLE OF CHILDREN AGING 36 TO 120 MONTHS

Tóm tắt

Anthropometry at different ages released by the World Health Organization (WHO) as well as the Ministry of Health of Vietnam is using for assessing health, nutrition, and social wellbeing. It is really important for children who are at pre-school, and primary school ages. Data is tabular and applying for a jump of half-year intervals. In the case of a child’s age by month is between intervals, the height has to be calculated by deductive method. The linearizing method has been used to convert the table data into the linear equation which can be used for applying in anthropometric assessment to children who have age from 36 to 120 month -old, counting to month-old instead of by half-year jump for ages. The obtained linear equation is y = 0.49x + 79.97, whereas y is standard height corresponding to x months old of boy age. The R2 is 0.9978. By the same method and calculating procedure, the linear equation for the height of girls aging from 36 months to 120 months is y = 0.41x + 86,49. Using these equations when assessing children’s height comparing to the WHO’s standard is more convenient because the counting intervals are detailed to months instead of hafl-year as WHO’s standard table.
Keywords: Linearizing, girl and boy’s height, standards of weight and height of children