title: The clinical association between free androgen index and erectile dysfunction in men.
abstract: OBJECTIVE
  To assess the relation of sex hormone levels in men, as measured by Free Androgen Index (FAI), with severity of erectile dysfunction (ED) and with their response to treatment.
  
  
  METHODS
  We retrospectively reviewed the medical records of men who consecutively attended the urology clinic with the complaint of ED between March 2004 and October 2007. The Sexual Health Inventory for Men (SHIM) score was used as the main outcome measure in this study, and its variation was tested by certain variables using the Epi Info software.
  
  
  RESULTS
  A total of 150 men were studied. The majority of patients (93%) had FAI in the normal range levels, and had shown no relation to the SHIM score even after adjustment for other factors. However, FAI was highly related to patients' response to treatment, with the higher the level the higher was the proportion of patients responded well to treatment. Age of the patient was the only factor influencing the SHIM score they could attain, as shown by the linear regression analyses.
  
  
  CONCLUSIONS
  The FAI level is not related to the severity of ED. Its role however, is confined to the way patients are going to respond to medical treatment of ED. Further studies are therefore needed to assess the effectiveness of using this parameter as a reliable test of bioactive testosterone for men with ED.
authors.affiliation: Barts and the London Hospitals, UK.
authors.forename: Ammar
authors.initials: A
authors.lastname: Hameed
authors.forename: Ali
authors.initials: A
authors.lastname: Thwaini
authors.forename: Zeeshan
authors.initials: Z
authors.lastname: Aslam
authors.forename: Iqbal
authors.initials: I
authors.lastname: Shergill
authors.forename: Raed
authors.initials: R
authors.lastname: Ahmed
authors.forename: Ghada
authors.initials: G
authors.lastname: Yahia
authors.forename: Donald
authors.initials: D
authors.lastname: Morgan
mesh_terms: D000328:Adult; D000368:Aged; D000728:Androgens / Q000097:blood*; D007172:Erectile Dysfunction / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D055815:Young Adult
chemical_list: D000728:Androgens