Yazdani et al reported several equations related to bone mineral density in women. One equation predicts the T score for the femur. The authors are from Shaheed Beheshti University of Medical Sciences in Tehran.
Patient selection: adult women
Outcome: T score for femur
Parameters:
(1) age in years
(2) weight in kilograms
(3) menopause
(4) history of fracture
(5) exercise or physical activity (at least 30 minutes a day for at least 3 days a week)
(6) oral contraceptives taken
Parameter
Finding
Points
age
-0.04 * (age)
weight
0.024 * (weight)
menopause
no
0
yes
-0.236
history of fracture
no
0
yes
-0.366
exercise
no
0
yes
0.354
oral contraceptives
no
0
yes
0.251
T score =
= SUM(points for all 6 parameters) - 0.941
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