Widmark's factor r =
= (body ethanol concentration) / (blood ethanol concentration)
Parameters:
(1) gender
(2) height
(3) weight
body mass index in kg per square meter =
= (body weight in kilograms) / ((body height in meters)^2)
percent body fat for male =
= (1.34 * (BMI)) - 12.469
percent body fat for male =
= (1.371 * (BMI)) - 3.467
Alternatively percent body fat can be measured using bioelectric impedance.
body fat in kg =
= (total body weight in kg) * (percent body fat)
total body water =
= (0.724 * ((body weight in kg) - (body fat in kg)))
= (0.724 * (body weight in kg) * (100 - (percent body fat)) / 100
estimate for Widmark's factor =
= (total body water) / (0.8 * (body weight in kg))
Limitations:
• The equations give results that match the data in Table 1 (page 251) for males but not for females with a body weight above 58 kg.
