Figure 4.
Effect of zoledronic acid on incidence of hip fractures. Pooled estimate for the risk of hip fractures shows that zoledronic acid reduces the risk of vertebral fractures. Heterogeneity chi-squared = 0.29 (d. f. = 1) P = 0.591; Test of RR = 1: z = 3.29 P = 0.001.