Using the code for IOTF cutoff

[Vivian H Wang]

Dear all,

I am trying to calculate BMI with available dataset and use IOTF reference to define overweight/obesity of children. I was provided with a code to calculate the IOTF cut-off.
I am new to STATA and have elementary background in statistics. Would greatly appreciate any help I can have!

Code: egen bmiiotfz=zbmicat(bmi), xvar(age) gender(gender) gencode(male=1, female=2) ageunit(year)

Best,

[Roman Mostazir]

Looks right to me as long as your BMI is in (wt / ht(m²)). There are other conventions of using different exponential adjustment for BMI.