Americans of European or African Descent
Study set: 73 females and 118 males of the Tennessee Data Bank
discriminant function score =
= (1.96059 * (midshaft sagittal diameter of the radius in mm)) + (0.66338 * (midshaft transverse diameter in mm)) - 33.0122
Interpretation:
• If discriminant function score > 0, then male.
• If discriminant function score <= 0, then female.
• This is 99% accurate for females and 86% accurate for males.
Japanese
Study set: 40 females and 48 males from Japan (Hanihara, 1958).
discriminant function score =
= (total length of the radius in mm) + (1.27 * (midshaft circumference of the radius in mm)) + (3.16 * (circumference of the capitulum in mm)) + (7.71 * (medial-to-lateral diameter at the distal end in mm))
Interpretation:
• If discriminant function score > 696.97, then male.
• If discriminant function score <= 696.97, then female.
• This identified 96.66% of the bones correctly.
