Changing trends in national practice for external beam radiotherapy for clinically localized prostate cancer: 1999 Patterns of Care survey for prostate cancer

International Journal of Radiation Oncology, Biology, Physics
Michael J ZelefskyGerald E Hanks

Abstract

To report changing trends in external beam radiotherapy (EBRT) delivery practice for clinically localized prostate cancer as determined from the 1999 survey from the American College of Radiology National Patterns of Care Study. The 1999 survey included a weighted sample of 36,496 patient records obtained from a stratified two-stage sample of 554 patient records. Patients were surveyed from 58 institutions and were treated between January 1999 and December 1999. Of these, 36% (weighted sample size, 13,293; unweighted sample size, 162) were treated with brachytherapy with or without EBRT and 64% (weighted sample size, 23,203; unweighted sample size, 392) were treated with EBRT only. The latter group is the subject of this report. The following trends in clinical practice were analyzed according to prognostic risk groups and other variables and compared with the results of the prior surveys: use of androgen deprivation therapy (ADT) in combination with EBRT, higher prescription dose levels, and administration of elective whole pelvic RT (WPRT). The incidence of ADT use for favorable, intermediate, and unfavorable-risk groups was 31%, 54%, and 79%, respectively. A multivariate logistic regression analysis revealed a statistically ...Continue Reading

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