Score osteoporosis risk with the OSTA index from age and body weight for postmenopausal women.
Result
How to use this tool
Use age in years.
Use weight in kilograms.
Low, moderate or high risk of osteoporosis.
A bone density scan is the usual next step, decided with a clinician.
Formula & worked example
Age 65 and weight 55 kg gives 0.2 x (55 – 65) = -2, moderate risk.
Limitations — read this before you rely on it
Screening aid for postmenopausal women only, using the published OSTA index. It does not diagnose osteoporosis. This tool is for education only and is not medical advice. Talk to a clinician about any result that worries you, and never change treatment because of a calculator result.
Frequently asked questions
The Osteoporosis Self-Assessment Tool for Asians, a simple age-and-weight screening index for postmenopausal women.
No. Only bone density measurement diagnoses osteoporosis. OSTA selects who should be scanned.
Lower body weight correlates with lower bone density, so the index falls as weight falls relative to age.
It was not developed for men, so results in men are not validated.
Discuss bone density testing and calcium, vitamin D, exercise and falls prevention with a clinician.