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. 2016 Winter;16(4):492-495.

Validation of the Patient Global Impression of Improvement for Penile Prosthesis

Sean Douglas  1 , Austin Lutz  1 , Kevin T McVary  2 , Puneet Masson  3 , Jack Christian Winters  4 , Eric Laborde  1
Affiliations

Validation of the Patient Global Impression of Improvement for Penile Prosthesis

Sean Douglas et al. Ochsner J. 2016 Winter.

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.

Keywords: Assessment–outcomes; erectile dysfunction; penile prosthesis.

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Figures

Figure 1.
Figure 1.
The Pearson correlation coefficients for the SHIM vs the PGI-I, the EDITS vs the PGI-I, and the EDITS vs the SHIM at 3 months, 6 months, and 12 months. EDITS, Erectile Dysfunction Inventory of Treatment Satisfaction; PGI-I, Patient Global Impression of Improvement; SHIM, Sexual Health Inventory for Men.
Figure 2.
Figure 2.
The decrease in Patient Global Impression of Improvement (PGI-I) values with each time interval in the postoperative period correlating with increasing patient satisfaction scores within the first postoperative year.
See this image and copyright information in PMC

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