title: Sexual life of Japanese patients with erectile dysfunction taking phosphodiesterase type 5 inhibitors: an Internet survey using the Psychological and Interpersonal Relationship Scales-Short Form questionnaire.
abstract: OBJECTIVE
  To investigate details of sexual function of erectile dysfunction in Japanese patients taking phosphodiesterase type 5 inhibitors.
  
  
  METHODS
  A Japanese version of the Psychological and Interpersonal Relationship Scales-Short Form was used to carry out a nationwide survey using the Internet. A total of 556 erectile dysfunction patients (age 30-70 years) who had been prescribed a phosphodiesterase type 5 inhibitor and had attempted sexual intercourse within the past 6 months were included in this survey. Scores were compared in relation to the phosphodiesterase type 5 inhibitors most frequently taken within the past 6 months.
  
  
  RESULTS
  In the subdomains of self-confidence and spontaneity of the Psychological and Interpersonal Relationship Scales-Short Form, scores for vardenafil and tadalafil were significantly higher than those for sildenafil. In the subdomain of time concern of the Psychological and Interpersonal Relationship Scales-Short Form, the score for tadalafil was significantly lower than that for others.
  
  
  CONCLUSIONS
  Our findings support the hypothesis that Japanese patients with erectile dysfunction have high sexual self-confidence, spontaneity and low time concerns when taking tadalafil. These characteristics of tadalafil could be associated with high patient satisfaction and high preference.
authors.affiliation: Department of Urology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Tsujimura
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kiuchi
authors.forename: Tetsuji
authors.initials: T
authors.lastname: Soda
authors.forename: Kentaro
authors.initials: K
authors.lastname: Takezawa
authors.forename: Hidenobu
authors.initials: H
authors.lastname: Okuda
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Fukuhara
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Takao
authors.forename: Norio
authors.initials: N
authors.lastname: Nonomura
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Miyagawa
mesh_terms: D000328:Adult; D000368:Aged; D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000523:psychology; D006801:Humans; D020407:Internet; D008297:Male; D008875:Middle Aged; D058986:Phosphodiesterase 5 Inhibitors / Q000494:pharmacology / Q000627:therapeutic use*; D012725:Sexual Behavior / Q000187:drug effects / Q000523:psychology* / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires
chemical_list: D058986:Phosphodiesterase 5 Inhibitors
keywords: Psychological and Interpersonal Relationship Scales-Short Form; erectile dysfunction; inhibitors of phosphodiesterase type 5 inhibitors; internet survey