Long-term outcomes of dose-escalated intensity modulated radiation therapy alone without androgen deprivation therapy for patients with intermediate and high-risk prostate cancer.

Even though the variables risk classification and biochemical failure were not found to be independently associated with OS in the multiple regression analysis, differences in the curves were statistically significant (or borderline significant for biochemical failure) in the univariate logic of the Kaplan-Meier and log-rank test analyses.

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