Bloom 1982.

Methods	Multicenter prospective randomised trial ‐ method not stated
Participants	189 patients T3 or B2C bladder cancer treated from 1966 ‐ 1975
Interventions	pre‐operative radiotherapy ‐4000 cGy in 4 weeks (whole pelvis) plus elective cystectomy versus radical radiotherapy ‐4000 cGy in 4 weeks plus 2000 cGy boost with salvage cystectomy
Outcomes	disease‐specific survival. analysed on an intention‐to‐treat basis (n = 189) and according to treatment received (n = 162)
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Low risk	A ‐ Adequate