FIG. 1.
Effect of baseline risk factors on reduction in vertebral fracture with zoledronic acid 5 mg at 3 yr in stratum I. OP, Osteoporosis (femoral neck T-score ≤−2.5); VFx, vertebral fracture; BP, bisphosphonate; CrCl, creatinine clearance; ZOL, zoledronic acid; CI, confidence interval. *, Vertebral fracture risk was assessed in the stratum I modified intent-to-treat population.