A systematic review 1 included 7 RCTs with a total of 1,056 subjects. Odds ratio for progression of the disease with nilutamide plus orchidectomy compared with orchidectomy plus placebo was 0.84 (95% CI 0.71 to 1.00). OR for death of due to prostate cancer was 0.90 (95% CI 0.74 to 1.09). 48% of patients in the combination therapy group compared to 34% in orchidectomy group reported improvement in metastatic-related bone pain (p<0.001). In the combination therapy group the disease progressed in 21% as compared to 33% in the orchidectomy group in 6 months (p<0.001).
Comment: The quality of evidence is downgraded by sparse data.
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