Erectile Function in Men Presenting with Lower Urinary Tract Symptoms from Benign Prostate Enlargement: Association with Quality of Life Scores in the Context of Interviewer-Assisted Questionnaire Administration

Abstract

A bstract Background: Interviewer-assisted administration of International Prostate Symptoms Score (IPSS) and Internal Index of Erectile Function-5 (IIEF-5) questionnaires in men with lower urinary tract symptoms (LUTS) due to benign prostate enlargement (BPE) may generate inconsistent outcomes. Objectives: To assess the correlation between the scores from interviewer-assisted administration of the IPSS questionnaire and the IIEF-5 questionnaire in men with uncomplicated LUTS due to BPE. Materials and Methods: The IPPS and the IIEF-5 questionnaires were administered with interviewer assistance to a cross-section of men presenting to the hospital with symptoms of LUTS due to uncomplicated BPE. The demographics were ascertained, and the association between IPPS and IIEF-5 scores was determined using linear correlation. Results: There were 211 participants in 18 months with a mean age of 66.5 ± 9.5years. The mean prostate volume, prostate-specific antigen, peak flow rate, and post-void residual volume were 55.2 ± 10.1 mL, 3.1 ± 0.7 ng/mL, 20.8 ± 8.2 mL/s, and 38.1 ± 21.5 mL, respectively. One hundred and eighty-six participants (88.2%) attained post-primary level of formal education. Moderate LUTS was reported in 51.7% ( n = 109), while severe LUTS was reported in 10.4% ( n = 22) participants. The mean storage LUTS (sLUTS) score was 6.25 ± 2.84, the mean voiding LUTS (vLUTS) score was 4.27 ± 4.56, and the mean IPSS was 10.38 ± 6.44. The mean IIEF-5 score was 15.17 ± 6.09. There was a poor correlation between IIEF-5 and sLUTS (Spearman rho –0.02; P = 0.77), vLUTS (Spearman rho –0.058; P = 0.403), IPSS scores (Spearman rho –0.048; P = 0.49), as well as with quality of life (QoL) preferences (F 1.722; P = 0.117). Conclusions: Interviewer-assisted IIEF-5 scores do not relate with sLUTS, vLUTS IPSS, and QoL due to LUTS, as is the case with reports on self-administered IIEF-5 scores.