Fig. 5

Kaplan–Meier curves for prostate-specific antigen progression-free survival (PSA-PFS) showed significantly better results in the group undergoing combined androgen blockade therapy with concurrent gonadotropin-releasing hormone antagonist (CAB-antagonist therapy, n = 11) than the group undergoing combined androgen blockade therapy with concurrent gonadotropin-releasing hormone agonist (CAB-agonist therapy, n = 17) in prostate cancer patients with more than six bone metastases (b). There were no differences between the two groups in prostate cancer patients with less than six bone metastases (a)