Table 1.

Classification of osteoporosis for postmenopausal women [1].

Normal	Bone mineral density (BMD) ≥ −1.0 SD of young adult reference range (T-score ≥ −1.0)
Osteopenia	BMD between −1.0 SD and −2.5 SD below the young adult mean (−1.0 > T-score > −2.5)
Osteoporosis	BMD ≤ −2.5 SD of the young adult mean (T-score ≤ −2.5)
Severe/Established Osteoporosis	BMD ≤ −2.5 SD of the young adult mean with the presence of 1 or more fragility fractures

∗T-score: comparison with young adult mean.