The childhood growth charts used by most centers in
North America are
the charts produced by the National Center for Health Statistics
(NCHS) in 1977. There are a number of problems with those
charts that have been overcome in the newly produced charts from
CDC. Specifically, the 1977 charts did not fully represent a
cross-section of children living in the U.S. They were also
deficient in including breast-fed infants. They did not make the
transition well, using the recumbent lengths on the infant charts
and standing heights on the childrens-adolescents
growth charts, and only heights up to 18 years of age were utilized.
The new charts follow adolescents up to 20 years of age. The new
charts also allow both percentiles and z-scores to be determined and
provide body mass index for age charts and smooth the percentile
curves.
Fima
Lifshitz, MD;
Judith G. Hall,
OC, MD