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  • Title: Study design in osteoporosis: a European perspective.
    Author: Kanis JA, Alexandre JM, Bone HG, Abadie E, Brasseur D, Chassany O, Durrleman S, Lekkerkerker JF, Caulin F.
    Journal: J Bone Miner Res; 2003 Jun; 18(6):1133-8. PubMed ID: 12817770.
    Abstract:
    The advent of effective agents for the treatment of osteoporosis has led to the view that placebo-controlled trials to test new agents for efficacy are no longer appropriate. Rather, studies of superiority, equivalence, or non-inferiority have been recommended. Such studies require very large sample sizes, and the burden of osteoporotic fracture in a trial setting is substantially increased. Studies of equivalence cannot be unambiguously interpreted because the variance in effect of active comparator agents is too large in osteoporosis. If fracture studies are required by regulatory agencies, there is still a requirement for placebo-controlled studies, although perhaps of shorter duration than demanded at present.
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