title: Therapeutic effectiveness and patient satisfaction after 6 months of treatment with tadalafil, sildenafil, and vardenafil: results from the erectile dysfunction observational study (EDOS).
abstract: OBJECTIVE
  This observational study was conducted across Europe to assess health outcomes in men with erectile dysfunction (ED) who took tadalafil, sildenafil citrate (sildenafil), or vardenafil HCl (vardenafil) for 6 mo.
  
  
  METHODS
  Therapy effectiveness and patient satisfaction were evaluated using established and new questions on erectile function. Behavioural, psychological, and relationship outcomes were assessed using the short form of the Psychological and Interpersonal Relationship Scales (SF-PAIRS).
  
  
  RESULTS
  In nine European countries at 904 sites, 8047 patients were enrolled and 94% (7560) selected either tadalafil (5315), sildenafil (1252), or vardenafil (993) for treatment at baseline. Of the 7560, 3998 (52.9%) took the same drug for 6 mo. Baseline characteristics across the three treatment groups were comparable: mean age approximately 56 yr, moderate or severe ED, and mean International Index of Erectile Function-Erectile Function domain score about 13. Tadalafil, sildenafil, and vardenafil were therapeutically effective and improved patient satisfaction in the 40-58% of men who completed 6 mo of a single therapy. Patients taking tadalafil consistently had numerically higher levels of therapeutic effectiveness and satisfaction compared with patients who took sildenafil or vardenafil. The three cohorts had statistically significant changes from baseline in response to SF-PAIRS and there were significant differences, in favour of tadalafil, among cohorts in the Time Concerns domain.
  
  
  CONCLUSIONS
  In a large observational study that mimics a routine clinical setting, most patients selected an inhibitor of phosphodiesterase 5 to treat ED, which resulted in a high level of therapeutic effectiveness and patient satisfaction.
authors.affiliation: Hospital Carlos Haya, Servicio de Urologia, Malaga, Spain. amartinmorales@terra.es <amartinmorales@terra.es>
authors.forename: Antonio
authors.initials: A
authors.lastname: Martin-Morales
authors.forename: Josep Maria
authors.initials: JM
authors.lastname: Haro
authors.forename: Anthony
authors.initials: A
authors.lastname: Beardsworth
authors.forename: Jordan
authors.initials: J
authors.lastname: Bertsch
authors.forename: Stathis
authors.initials: S
authors.lastname: Kontodimas
mesh_terms: D002243:Carbolines / Q000627:therapeutic use*; D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D007093:Imidazoles / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D010879:Piperazines / Q000627:therapeutic use*; D011446:Prospective Studies; D011687:Purines / Q000627:therapeutic use; D012074:Remission Induction; D000068677:Sildenafil Citrate; D013450:Sulfones / Q000627:therapeutic use*; D011795:Surveys and Questionnaires; D000068581:Tadalafil; D013997:Time Factors; D014227:Triazines / Q000627:therapeutic use; D000069058:Vardenafil Dihydrochloride
chemical_list: D002243:Carbolines; D007093:Imidazoles; D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D014227:Triazines; D000069058:Vardenafil Dihydrochloride; D000068581:Tadalafil; D000068677:Sildenafil Citrate