Article (Scientific journals)
Design for an Ipriflavone Multicenter European Fracture Study
Reginster, Jean-Yves; Bufalino, L.; Christiansen, C. et al.
1997In Calcified Tissue International, 61 (Suppl 1), p. 28-32
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Abstract :
[en] In order to investigate the efficacy of ipriflavone (i.p.) on the prevention of vertebral fractures and the effect on bone mineral density (BMD) in women with postmenopausal osteoporosis, a large multicentric European study was designed and is presently ongoing. Included in the study were 460 Caucasian, nonobese postmenopausal women aged > 45 and < 75 years, menopaused for at least 12 months. Inclusion was on the basis of a lumbar bone mineral density (BMD) lower than 2 SD compared with healthy women aged 50 years, corresponding to values below 0.860 g/cm2 (antero-posterior measurement) by Hologic QDR 1000. Women with prevalent vertebral fractures were excluded as well as those presenting secondary osteoporosis or having been treated with medications that could affect bone metabolism. This study was designed as a 3-year, double-blind, placebo-controlled, parallel group study that randomized the women to the oral administration of either 3 x 200 mg/day of i.p. or placebo. All patients received a daily supplement of 500 mg calcium. The primary purpose of the study was to evaluate the efficacy of i.p. in preventing vertebral nontraumatic fractures. Fracture is defined here as a > or = 20% decrease in any anterior, central, or posterior T4-L4 vertebral height. Blinded vertebral X-ray readings and vertebral morphometry have been centralized in an independent Center, with standardized evaluation of two experts. Power calculations have been based on the hypothesis that 21% of placebo-treated patients would fracture within 3 years and that treatment with i.p. would lead to a 50% reduction in the incidence of fracture. Statistical tests have been designed to have a power of 80%, with a type I error equal to 5%. Secondary endpoints were changes in vertebral, radial, and femoral BMD. Centralized controls on 100% BMD scans would ensure the good quality of BMD readings. This study should verify the hypothesis that i.p. significantly decreases the risk of vertebral fracture in postmenopausal, osteoporotic women.
Disciplines :
Rheumatology
Author, co-author :
Reginster, Jean-Yves  ;  Université de Liège - ULiège > Département des sciences de la santé publique > Epidémiologie et santé publique
Bufalino, L.
Christiansen, C.
Devogelaer, J. P.
Gennari, C.
Riis, B. J.
Roux, C.
Language :
English
Title :
Design for an Ipriflavone Multicenter European Fracture Study
Publication date :
1997
Journal title :
Calcified Tissue International
ISSN :
0171-967X
eISSN :
1432-0827
Publisher :
Springer, Germany
Volume :
61
Issue :
Suppl 1
Pages :
S28-32
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 May 2010

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