Abstract |
To examine the effect of timely zoledronic acid (ZA) treatment on clinical outcomes and health care utilization in patients with bone-metastatic prostate cancer. Patients with prostate cancer and bone metastasis were identified in a Veterans Affairs database (01/2002-09/2009). Eligible patients had no documented skeletal-related events (SREs) before the index date (that is, the first bone metastasis diagnosis date). Patients who received early ZA treatment, defined as having a ZA infusion after the index date and before any recorded SREs, were matched 1:1 on propensity score to patients not treated with bisphosphonates (BPs). Risks of SREs, hospitalization and death during the 6-month post-index period were compared between matched cohorts using Kaplan-Meier analyses. Baseline characteristics were well balanced between the matched cohorts (n = 73 per group). 6-month SRE-free survival and hospitalization-free survival were higher in patients receiving timely ZA than patients without BP treatment (91.7 versus 71.5%, P < 0.01; 80.5 versus 66.3%, P = 0.05, respectively). 6-month mortality risk was significantly lower in patients treated with ZA versus those without BP treatment (4.3 versus 13.8%, P = 0.04). Timely ZA intervention in bone-metastatic prostate cancer patients was associated with significant reductions in 6-month risks of SREs, hospitalization and mortality, as compared with no BP treatment.
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Authors | N V Velde, E Q Wu, A Guo, M Lu, A P Yu, H Sharma, J Liu, C P S Fan, L Shi |
Journal | Prostate cancer and prostatic diseases
(Prostate Cancer Prostatic Dis)
Vol. 14
Issue 1
Pg. 79-84
(Mar 2011)
ISSN: 1476-5608 [Electronic] England |
PMID | 21173792
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Antineoplastic Agents
- Diphosphonates
- Imidazoles
- Zoledronic Acid
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Topics |
- Aged
- Antineoplastic Agents
(administration & dosage)
- Bone Neoplasms
(drug therapy, secondary)
- Diphosphonates
(administration & dosage)
- Hospitalization
(statistics & numerical data)
- Humans
- Imidazoles
(administration & dosage)
- Kaplan-Meier Estimate
- Male
- Middle Aged
- Prostatic Neoplasms
(drug therapy, pathology)
- Retrospective Studies
- Risk Assessment
- Time Factors
- Treatment Outcome
- United States
- United States Department of Veterans Affairs
- Zoledronic Acid
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