By Anonymous - November 20, 2018
BMI
Body mass index is a frequently used health metric.
We obtained subject weight data for the original baseline questionnaire as well as many of the Hospitalization History Forms (HHFs).
$$ \text{BMI} = \frac{\text{Weight}[kg]} {\text{Height}^2[m]} = 703 \times \frac{\text{Weight}[lbs]} {\text{Height}^2[in]} $$
| Form | Variable Name | Date |
|---|---|---|
| Baseline | BMI_BL | 2002 - 2008 |
| HHF4 | BMI_HHF4 | 2011 - 2012 |
| HHF5 | BMI_HHF5 | 2012 - 2013 |
Clinic BMI
A BMI measurement was obtained at most subject visits to AHS-2 study clinics. This is usually stored in a column called "WM_BMI". See code section for details.