Please use this identifier to cite or link to this item:
Type: Artigo de periódico
Title: Validation Of Portuguese Version Of Quality Of Erection Questionnaire (qeq) And Comparison To International Index Of Erectile Function (iief) And Rand 36-item Health Survey.
Author: Reis, Ana Luiza
Reis, Leonardo Oliveira
Saade, Ricardo Destro
Santos, Carlos Alberto
Lima, Marcelo Lopes de
Fregonesi, Adriano
Abstract: To validate the Quality of Erection Questionnaire (QEQ) considering Brazilian social-cultural aspects. To determine equivalence between the Portuguese and the English QEQ versions, the Portuguese version was back-translated by two professors who are native English speakers. After language equivalence had been determined, urologists considered the QEQ Portuguese version suitable. Men with self-reported erectile dysfunction (ED) and infertile men who had a stable sexual relationship for at least 6 months were invited to answer the QEQ, the International Index of Erectile Function (IIEF) and the RAND 36-Item Health Survey (RAND-36). The questionnaires were presented together and answered without help in a private room. Internal consistency (Cronbach's α), test-retest reliability (Spearman), convergent validity (Spearman correlation) coefficients and known-groups validity (the ability of the QEQ Portuguese version to differentiate erectile dysfunction severity groups) were assessed. We recruited 197 men (167 ED patients and 30 non-ED patients), mean age of 53.3 and median of 55.5 years (23-82 years). The Portuguese version of the QEQ had high internal consistency (Cronbach α=0.93), high stability between test and retest (ICC 0.83, with IC 95%: 0.76-0.88, p<0.001) and Spearman correlation coefficient r=0.82 (p<0.001), which demonstrated the high correlation between the QEQ and IIEF results. The correlations between the QEQ and RAND-36 were significantly low in ED (r=0.20, p=0.01) and non-ED patients (r=0.37, p=0.04). The QEQ Portuguese version presented good psychometric properties and high convergent validity in relation to IIEF. The low correlations between the QEQ and the RAND-36, as well as between the IIEF and the RAND-36 indicated IIEF and QEQ specificity, which may have resulted from the patients' psychological adaptations that minimized the impact of ED on Quality of Life (QoL) and reestablished the well-being feeling.
Subject: Adult
Aged, 80 And Over
Cross-cultural Comparison
Erectile Dysfunction
Middle Aged
Penile Erection
Personal Satisfaction
Quality Of Life
Reproducibility Of Results
Severity Of Illness Index
Statistics, Nonparametric
Surveys And Questionnaires
Young Adult
Citation: International Braz J Urol : Official Journal Of The Brazilian Society Of Urology. v. 41, n. 1, p. 155-167
Rights: fechado
Identifier DOI: 
Date Issue: -1-Uns- -1
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
pmed_25928522.pdf914.06 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.