Dataset from A 3-year, Double-blind Extension to CZOL446H2301 to Evaluate the Long-term Safety and Efficacy of Zoledronic Acid in the Treatment of Osteoporosis in Postmenopausal Women Taking Calcium and Vitamin D

This extension study is designed to assess the long term safety and efficacy of zoledronic acid in postmenopausal women with osteoporosis who have participated in the CZOL446H2301 (NCT00049829): HORIZON Pivotal Fracture Trial. This extension study began after the 3-year core study ended. Baseline is the same as Year 3.