PMID: 11907945Mar 23, 2002Paper

A 3-year study of prevention of postmenopausal bone loss: conjugated equine estrogens plus medroxyprogesterone acetate versus tibolone

Climacteric : the Journal of the International Menopause Society
D ThiébaudP Burckhardt

Abstract

The aim of this study was to investigate the effects of tibolone in the prevention of postmenopausal bone loss over 3 years, and to compare these with the effects of sequential hormone replacement therapy. Forty early postmenopausal women were randomized to a 21-day regimen of conjugated equine estrogens (CEE, Premarin) plus sequential medroxyprogesterone acetate (MPA, Prodafem), or tibolone (Livial) daily. In total, 36 women completed 12 months and were considered for the intent-to-treat analysis, 34 completed 24 months and 23 completed 36 months. Main drop-out reasons were: lost to follow-up (n = 9) and minor side-effects (n = 4). Bone mineral density was measured at baseline and after 6, 12, 24 and 36 months, using dual-energy X-ray absorptiometry at the lumbar spine and the upper femur (neck, trochanter, total hip). In both groups, bone loss was prevented. Treatment with tibolone demonstrated significant increases in bone density at the spine (+4.6%; p < 0.01), at the total hip (+3.2%; p < 0.01) and at the trochanter (+4.5%; p < 0.01), whereas the CEE/MPA group showed a non-significant increase of bone mineral density at the lumbar spine (+2.6%) but no increases at the hip. Between-group differences in bone mineral density ...Continue Reading

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