Baseline characteristics with participants divided into groups according to quartiles of BMD at calcaneus and femoral neck.

a. p-value for no difference between group A and group Bb. 10-year absolute risk of a hip fracture according to FRAX including BMD of the femoral neckc. 10-year absolute risk of a major osteoporotic fracture (hip, vertebral, humerus or radius) according to FRAX including BMD of the femoral neckGroups A, B and C are the same as in Fig 2.