title: Recruitment for a clinical trial of drug treatment for benign prostatic hyperplasia.
abstract: OBJECTIVE
  To evaluate the effectiveness of various recruitment strategies for a 6-year multicenter clinical trial of medical therapy for benign prostatic hyperplasia, the Medical Therapy of Prostatic Symptoms Trial.
  
  
  METHODS
  How participants learned about the trial was obtained during initial contact with clinical centers and at the first screening visit. The yield of randomized participants from the initial contact and first screening visit was calculated for each of the recruitment techniques.
  
  
  RESULTS
  During a period of 28 months, 16,723 potential trial participants made an initial contact with the 17 clinical centers, and 2931 men were randomized. An average of four initial contacts were required for each first screen visit and six per randomized participant. Newspaper (29.9%) and mail (26.7%) were the two leading sources of randomized participants. Medical sources (9.6%), radio (8.8%), and newsletters (8.4%) were also important sources. All clinical centers achieved or exceeded their recruitment goals.
  
  
  CONCLUSIONS
  Mass mail and newspaper were the most effective recruitment techniques to enlist the interest of men with urinary symptoms for a long-term trial of drug therapy for benign prostatic hyperplasia.
authors.affiliation: Division of Kidney, Urologic, and Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20817, USA.
authors.forename: John W
authors.initials: JW
authors.lastname: Kusek
authors.forename: Allison
authors.initials: A
authors.lastname: Ahrens
authors.forename: Pamela K
authors.initials: PK
authors.lastname: Burrows
authors.forename: Harry S
authors.initials: HS
authors.lastname: Clarke
authors.forename: Harris E
authors.initials: HE
authors.lastname: Foster
authors.forename: Karen
authors.initials: K
authors.lastname: Hanson
authors.forename: Stephen C
authors.initials: SC
authors.lastname: Jacobs
authors.forename: Aaron
authors.initials: A
authors.lastname: Kirkemo
authors.forename: Kelly
authors.initials: K
authors.lastname: O'Berry
authors.forename: Valory N
authors.initials: VN
authors.lastname: Pavlik
mesh_terms: D006801:Humans; D008297:Male; D008402:Mass Media; D008875:Middle Aged; D015337:Multicenter Studies as Topic; D018579:Patient Selection; D011177:Postal Service; D011470:Prostatic Hyperplasia / Q000188:drug therapy*; D016032:Randomized Controlled Trials as Topic