Patient preference for once-monthly ibandronate versus once-weekly alendronate in a randomized, open-label, cross-over trial: the Boniva Alendronate Trial in Osteoporosis (BALTO)

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Abstract
Objective: Ibandronate, a potent nitrogen-containing bisphosphonate, can be administered with extended interval dosing. Patient preferences were assessed for once-monthly versus once-weekly bisphosphonate treatment using a previously developed, open-label, cross-over trial design.Research design and methods: This was a 6‐month, prospective, randomized, open-label, multi-center study with a two-period and two-sequence cross-over treatment design. After screening, eligible patients (postmenopausal women with osteoporosis) were randomized to once-monthly ibandronate 150 mg followed by once-weekly alendronate 70 mg for a total of 6 months (Sequence A) or once-weekly alendronate followed by once-monthly ibandronate for a total of 6 months (Sequence B). The primary objective was to evaluate patient-reported preference for either the once-monthly ibandronate regimen or the once-weekly alendronate regimen based on responses to a preference questionnaire.Results: A total of 342 patients were enrolled into ...