Foster, R.S.

patient model centre cancer tumour mass size predictor prediction model prediction eortc /mrc trial serum level resection probability masse tissue treatment validation european teratoma validation data study testicular regression teratoma elements result eortc histology multivariable chemotherapy value table element postchemotherapy urology nonseminomatous testicular cancer trial tumor change ldh serum level retroperitoneal nonseminomatou patient data group point frequency development chorionic gonadotropin prechemotherapy univariable research surgery oncol retroperitoneal mass histology regression coef ficients 424–432 analysis center effect indiana lymph validity development data lactate dehydrogenase prediction rule mass histology case-mix university indiana university serum level steyerberg performance calibration outcome hospital marker ficient hosmer-lemeshow method score