The World Health Organization (WHO) has published data on the physical development of infants and children up to 5 years of age.
Patient selection: infant or child up to 5 years of age (up to 1,856 days of age)
Parameters:
(1) birthdare
(2) date of examination
(3) gender
(4) head circumference in cm
age in days =
= ((date of exam) - (birthdate))
z-score =
= ((head circumference) - (mean)) / (standard deviation)
