When entering data it is important to verify that the data is valid or not. This is typically done by checking the value against expected limits.
Data: height for age
Reference: CDC 2000 height for age tables (merged 0 to 36 month with the 2 to 20 year tables)
Age metric: age in months
age in months =
= ((current date) - (birthdate)) / 30.4375
Categories:
(1) absurdly high (more than 2 times the +4 SD value)
(2) more than 4 standard deviations above mean for age
(3) from -4 to +4 SD for age
(4) less than -4 SD from mean
(5) absurdly low (less than 0.5 times the -4 SD value)
