PC	Prostate cancer
TCRD	Taiwan Cancer Registry database
NCCN	National Comprehensive Cancer Network
PSA	Prostate-specific antigen; AUA, American Urological Association
ASTRO	American Society for Radiation Oncology
UIR	Unfavorable intermediate risk
RP	Radical prostatectomy; RT, radiotherapy
ADT	Androgen-deprivation therapy; RCT, randomized controlled trial
3D-CRT	Three-dimensional conformal radiotherapy
IMRT	Intensity-modulated radiotherap
PSM	Propensity score matching
NHIRD	National health insurance research data
BF	Biochemical failure; LRR, locoregional recurrence
DM	Distant metastasis
ICD-9-CM	International Classification of Diseases, Ninth Revision, Clinical Modification
CCI	Charlson Comorbidity Index
OS	Overall survival
HR	Hazard ratio
EBRT	External-beam radiotherapy
CI	Confidence interval
BFS	Biochemical failure–free survival
aHR	Adjusted hazard ratio