Carefully calculate the child's age
of the age of the infant or child can be a significant source of error
in plotting, and thus assessment of the growth of the child.
Would this error
affect your clinical impression? If this was the only measure of this
infant available, the clinical impression that both weight and length
were between the 25th and 50th percentiles would be interpreted as appropriate growth
for age. However, her actual growth between the 5th and 10th percentiles may be appropriate
if this has been her growth pattern -- or it may warrant further investigation
if it is a significant change from previous parameters.
age is the most influential variable in rapidly growing children,
so it is essential to know the exact age of the child for plotting all
measurements. Age calculated from the birthdate and the date of each set
of measurements or the stated age should be recorded.