title: Validation of the Patient Global Impression of Improvement for Penile Prosthesis.
abstract: BACKGROUND
  No consensus on the preferred means of evaluating patients after surgical placement of an inflatable penile prosthesis (IPP) currently exists. Many self-assessment questionnaires are available, but none specifically targets patients with IPPs. The purpose of this study was to assess the construct validity of the Patient Global Impression of Improvement (PGI-I) for evaluating patient satisfaction after placement of an IPP.
  
  
  METHODS
  We conducted a multicenter prospective trial and enrolled patients who elected to have a 3-piece IPP surgically implanted. Postoperatively, patients completed the Sexual Health Inventory for Men (SHIM), Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS), and PGI-I at 3, 6, and 12 months. The Pearson correlation coefficient (PCC) was used to compare scores over time.
  
  
  RESULTS
  Fifty-six patients were enrolled, and complete data were available for 39 patients. At 3 months, the PGI-I correlated with the EDITS (PCC=0.83,P<0.01) and with the SHIM (PCC=0.73,P<0.01). At 6 months, the PGI-I correlated with the EDITS (PCC=0.74,P<0.01). At 6 months, the PCC between the PGI-I and the SHIM was 0.41 (P<0.05). At 12 months, the PCC between the PGI-I and the EDITS was 0.83 (P<0.01), and the PCC between the PGI-I and the SHIM was 0.61 (P<0.01).
  
  
  CONCLUSIONS
  Overall, the PGI-I appears to correlate with both the SHIM and EDITS and is a valid evaluation tool for use with patients after IPP placement.
authors.affiliation: Department of Urology, Ochsner Clinic Foundation, New Orleans, LA.
authors.forename: Sean
authors.initials: S
authors.lastname: Douglas
authors.affiliation: Department of Urology, Ochsner Clinic Foundation, New Orleans, LA.
authors.forename: Austin
authors.initials: A
authors.lastname: Lutz
authors.affiliation: Department of Urology, Louisiana State University Health Sciences Center, New Orleans, LA.
authors.forename: Kevin T
authors.initials: KT
authors.lastname: McVary
authors.affiliation: Division of Urology, Southern Illinois University School of Medicine, Springfield, IL.
authors.forename: Puneet
authors.initials: P
authors.lastname: Masson
authors.affiliation: Division of Urology, University of Pennsylvania School of Medicine, Philadelphia, PA.
authors.forename: Jack Christian
authors.initials: JC
authors.lastname: Winters
authors.affiliation: Department of Urology, Ochsner Clinic Foundation, New Orleans, LA.
authors.forename: Eric
authors.initials: E
authors.lastname: Laborde
keywords: Assessment–outcomes; erectile dysfunction; penile prosthesis