How many ethnic specific versions of FRAX exist?

The correct answer is four, as the FRAX (Fracture Risk Assessment Tool) has been developed in various ethnic-specific versions to better assess fracture risk among diverse populations. This tool considers factors such as age, gender, body mass index, previous fractures, and family history, among others, but it also takes into account the differing epidemiological data on fracture prevalence and bone health among different ethnic groups.

The four specific versions are tailored to populations such as those in North America, the UK, Europe, and certain Asian countries, allowing for more accurate assessments in areas where population-specific data on fracture risk is significant. This stratification enhances the effectiveness of fracture risk predictions and helps health professionals provide more personalized care to their patients based on their ethnic backgrounds. This is particularly important as fracture risk can vary considerably among different demographics due to genetic, environmental, and lifestyle factors.