Fig. 8 Assessment guidelines based on the 10-year probability of a major fracture (in percent). The dotted line denotes the intervention threshold. Where assessment is made in the absence of BMD, a BMD test is recommended for individuals where the probability assessment lies in the orange region. The intervention threshold and BMD assessment thresholds used are those
derived from Table 7 The assessment #SB525334 molecular weight randurls[1|1|,|CHEM1|]# algorithm is summarised in Box 2. BOX 2 Assessment of fracture risk with FRAX with limited access to BMD No access or patchy access to densitometry In countries with very limited or no access to DXA, FRAX can be used without BMD. For the purpose of risk assessment, a characteristic of major importance is the ability of a technique to predict fractures, traditionally expressed as the increase in relative risk per SD unit decrease in risk score—termed the gradient of risk. The gradient of risk with FRAX is shown in Table 8 for the use of the clinical risk factors alone, femoral neck BMD and the combination [77]. Table 8 Gradients of risk (the Cyclosporin A purchase increase in fracture risk per SD change in risk score) with 95 % confidence intervals with the use of BMD at the femoral neck, clinical risk factors or the combination
([77] with kind permission from Springer Science+Business Media B.V.) Age (years) Gradient of risk BMD only Clinical risk factors alone Clinical risk factors + BMD (a) Hip fracture 50 3.68 (2.61–5.19) 2.05 (1.58–2.65) 4.23 (3.12–5.73) 60 3.07 (2.42–3.89) 1.95 (1.63–2.33) 3.51 Rolziracetam (2.85–4.33) 70 2.78 (2.39–3.23) 1.84 (1.65–2.05) 2.91 (2.56–3.31) 80 2.28 (2.09–2.50) 1.75 (1.62–1.90) 2.42 (2.18–2.69) 90 1.70 (1.50–1.93) 1.66 (1.47–1.87) 2.02 (1.71–2.38) (b) Other osteoporotic fractures 50 1.19 (1.05–1.34) 1.41 (1.28–1.56) 1.44 (1.30–1.59) 60 1.28 (1.18–1.39) 1.48 (1.39–1.58)
1.52 (1.42–1.62) 70 1.39 (1.30–1.48) 1.55 (1.48–1.62) 1.61 (1.54–1.68) 80 1.54 (1.44–1.65) 1.63 (1.54–1.72) 1.71 (1.62–1.80) 90 1.56 (1.40–1.75) 1.72 (1.58–1.88) 1.81 (1.67–1.97) The use of clinical risk factors alone provides a gradient of risk (GR) that lies between 1.4 and 2.1, depending upon age and the type of fracture predicted. These gradients are comparable to the use of BMD alone to predict fractures [31, 38]. For example, for the prediction of any osteoporotic fracture, the GR at the age of 70 years was 1.5 with femoral neck BMD [31]. With peripheral BMD, the gradient of risk is somewhat, though not significantly, lower (GR = 1.4/SD; 95 % CI = 1.3 − 1.5/SD). These data suggest that clinical risk factors alone are of value and can be used, therefore, in the many countries where DXA facilities are insufficient (Box 3).
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