Avagyan, V.

study volume method population recruitment response schiedam outpatient clinic subject prostate krimpen group variable prostate volume recruitment method flow rate difference bladder response rates clinic status outpatient schiedam study patient volunteer visit age group erasmus mc krimpen study distribution age groups van mastrigt r score regression erasmu age distribution responder recruitment methods number group 2 bladder contractility urodynamic transabdominal ultrasound examination age range effect schiedam population representative study regression analysis ipss score table krimpen population measurement non-response bias 20 gps study population analysis symptom representative mastrigt range pressure factor tract methods 1 variables ipss score transabdominal outcome prostatic hyperplasia contractility response rate prostate symptom score prostatic catheter value 0.11 condition appointment office sector furore rotterdam