<?xml version='1.0' encoding='UTF-8'?><xml><records><record><source-app name="HighWire" version="7.x">Drupal-HighWire</source-app><ref-type name="Journal Article">17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">NAKAYAMA, HIDETSUGU</style></author><author><style face="normal" font="default" size="100%">KANEMOTO, AYAE</style></author><author><style face="normal" font="default" size="100%">KIKUCHI, KOJI</style></author><author><style face="normal" font="default" size="100%">MATSUKI, KATSUYUKI</style></author><author><style face="normal" font="default" size="100%">TOMOBE, MITSURO</style></author><author><style face="normal" font="default" size="100%">TSUKAMOTO, SADAMU</style></author><author><style face="normal" font="default" size="100%">TAKESHIMA, HITOSHI</style></author><author><style face="normal" font="default" size="100%">OSHIRO, YOSHIKO</style></author><author><style face="normal" font="default" size="100%">SUGAHARA, SHINJI</style></author><author><style face="normal" font="default" size="100%">TOKUUYE, KOICHI</style></author></authors><secondary-authors></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Delayed Radiotherapy for Patients with Localized Prostate Cancer: Validation by Propensity Score Matching</style></title><secondary-title><style face="normal" font="default" size="100%">Anticancer Research</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2013-04-01 00:00:00</style></date></pub-dates></dates><pages><style  face="normal" font="default" size="100%">1629-1633</style></pages><volume><style face="normal" font="default" size="100%">33</style></volume><issue><style face="normal" font="default" size="100%">4</style></issue><abstract><style  face="normal" font="default" size="100%">Aim: To retrospectively investigate the biochemical outcome following delayed radiotherapy in patients with prostate cancer. Patients and Methods: From July 2000 to November 2008, 144 consecutive patients with localized prostate cancer underwent radiotherapy and androgen-deprivation therapy. Biochemical progression-free survival was compared in patients who began radiotherapy &gt;6 months (delayed group) with these who began ≤6 months (non-delayed group) from diagnosis by biopsy. Treatment selection bias was adjusted by the propensity score method. Results: After a median follow-up of 64 months, the 5-year biochemical progression-free survival of the delayed and non-delayed groups was 87.4% (95% confidence interval, CI=69.7-95.1%) and 96.6% (95% CI=89.6-98.9%), respectively (p=0.03). Delayed radiotherapy was the only independent risk factor for biochemical progression (hazard ratio=3.97, 95% CI 1.07-14.7, p=0.04). The results were validated by propensity score analysis. Conclusion: Delaying radiotherapy by &gt;6 months increases the risk of biochemical progression in patients with localized prostate cancer.</style></abstract></record></records></xml>