Mean standardised bone mineral density (BMD, mg/cm2) in those with or without pre-existing osteoporotic fractures
| Evidence of fracture | Site | Fracture | N | Geometric mean | 95% CI for ratio | p value |
|---|---|---|---|---|---|---|
| Diagnosed before entry to trial | Thoracolumbar spine | Yes | 14 | 857 | ||
| No | 153 | 984 | 0.79 to 0.96 | 0.006 | ||
| Proximal femur | Yes | 14 | 663 | |||
| No | 153 | 799 | 0.76 to 0.91 | <0.001 | ||
| Spinal radiograph at entry to trial | Thoracolumbar spine | Yes | 52 | 931 | ||
| No | 110 | 993 | 0.88 to 1.00 | 0.04 | ||
| Proximal femur | Yes | 52 | 755 | |||
| No | 110 | 802 | 0.89 to 1.00 | 0.05 | ||
| Either of above | Thoracolumbar spine | Yes | 55 | 929 | ||
| No | 112 | 996 | 0.88 to 0.99 | 0.02 | ||
| Proximal femur | Yes | 55 | 751 | |||
| No | 112 | 804 | 0.88 to 0.99 | 0.02 |