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Short title: Birth to 36 months: Boys, Length-for-age and Weight-for-age percentiles: Image title: CDC Growth Charts: United States: Author: NCHS: Keywords
The Bayley Scales of Infant and Toddler Development (version 4 was released September 2019) is a standard series of measurements originally developed by psychologist Nancy Bayley used primarily to assess the development of infants and toddlers, ages 1–42 months. [1]
The height, weight, and head circumference of a child can be compared to the expected parameters of children of the same age and sex to determine whether the child is growing appropriately. Growth charts can also be used to predict the expected adult height and weight of a child because, in general, children maintain a fairly constant growth curve.
Short title: Birth to 36 months: Boys, Head circumberence-for-age and Weight-for-length percentiles: Image title: CDC Growth Charts: United States: Author
By doing this, doctors can track a child's growth over time and monitor how a child is growing in relation to other children. There are different charts for boys and girls because their growth rates and patterns differ. For both boys and girls there are two sets of charts: one for infants ages 0 to 36 months and another for ages 2 and above.
The Tanner scale (also known as the Tanner stages or sexual maturity rating (SMR)) is a scale of physical development as pre-pubescent children transition into adolescence, and then adulthood. The scale defines physical measurements of development based on external primary and secondary sex characteristics , such as the size of the breasts ...
[1] In 2004, the World Health Organization began planning new growth chart references that could be used in all countries based on the WHO Multicentre Growth Reference Study (MGRS) (1997–2003). [2] The MGRS was a multifaceted study which gathered data from 8,500 children from widely differing ethnic backgrounds and cultural settings. [2]
As of 2021, the American Academy of Pediatrics (AAP) recommends developmental and behavioral screening for all children during regular well-child visits at 9, 18, and 30 months of age. The AAP also recommends screening children for autism spectrum disorder during well-child visits at 18 and 24 months of age.