International Index of Erectile Function (IIEF) Questionnaire
Evaluates erectile dysfunction and treatment outcomes in clinical trials.
Refer to the text below the calculator for more information about the original study that led to the development of the IIEF.
The IIEF questionnaire is a self-administered and validated tool for the clinical assessment of erectile dysfunction and treatment outcomes in clinical trials.
Scores of 0 to 5 are awarded to each of the 15 questions, then the scores are interpreted in the view of the five domains from the original study.
Guidelines
- Patients with low IEEF scores (<14 out of 30) in Domain A (Erectile Function) may be considered for a trial course of therapy with Sildenafil unless contraindicated. Specialist referral is indicated if this is unsuccessful.
- Patients demonstrating primary orgasmic or ejaculatory dysfunction (Domain B) should be referred for specialist investigation.
- Patients with reduced sexual desire (Domain C) require testing of blood levels of androgen and prolactin.
- Psychosexual counselling should be considered if low scores are recorded in Domains D and E but there is only a moderately lowered score (14 to 25) in Domain A.
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IIEF Questionnaire Explained
IIEF assessment assesses to a limit the psychosexual background and the partner relationship, both considered important factors in the presentation of male sexual dysfunction.
The respondent is asked to consider the impact their erection problems have had on their sexual life in the past four weeks. Sexual activity includes intercourse, caressing, foreplay and masturbation.
Scores of 0 to 5 are awarded to each of the 15 questions, then the scores are interpreted in the view of the five domains from the original study.
Domain | Title | Questions | Maximum Score | Mean Scores | |
Controls | Patients | ||||
Domain A | Erectile Function | 1, 2, 3, 4, 5 and 15 | 30 | 25.8 | 10.7 |
Domain B | Orgasmic Function | 9, 10 | 10 | 9.8 | 5.3 |
Domain C | Sexual Desire | 11, 12 | 10 | 7.0 | 6.3 |
Domain D | Intercourse Satisfaction | 6, 7 and 8 | 15 | 10.6 | 5.5 |
Domain E | Overall Satisfaction | 13, 14 | 10 | 8.6 | 4.4 |
Guidelines
- Patients with low IEEF scores (<14 out of 30) in Domain A (Erectile Function) may be considered for a trial course of therapy with Sildenafil unless contraindicated. Specialist referral is indicated if this is unsuccessful.
- Patients demonstrating primary orgasmic or ejaculatory dysfunction (Domain B) should be referred for specialist investigation.
- Patients with reduced sexual desire (Domain C) require testing of blood levels of androgen and prolactin.
- Psychosexual counselling should be considered if low scores are recorded in Domains D and E but there is only a moderately lowered score (14 to 25) in Domain A.
About the Original Study
Rosen et al. set out to develop a reliable and self-administered measure of erectile function that can be used cross-culturally in general population with sensitivity, specificity and validity.
Following linguistic validation in 10 languages and the application of an initial questionnaire with items from relevant domains of sexual function across various cultures, a final 15-item questionnaire, the IIEF was established. The IIEF was tested in a sample of 111 men with sexual dysfunction and 109 age-matched healthy volunteers.
This was then examined for sensitivity, specificity, reliability (internal consistency and test-retest repeatability), and construct (concurrent, convergent, and discriminant) validity.
Following a principal components analysis, 5 domains were identified, with eigenvalues greater than 1.0 and a high degree of internal consistency in the studied populations.
The IIEF showed adequate construct validity, and all five domains showed a high degree of sensitivity and specificity to the effects of erectile disfunction treatment.
References
Original reference
Rosen R, Riley A, Wagner G, et al. The International Index of Erectile Function (IIEF): A multidimensional scale for assessment of erectile dysfunction. Urology, 1997, 49: 822-830.
Specialty: Urology
System: Reproductive
Objective: Assessment
Year Of Study: 1997
Abbreviation: IIEF
Article By: Denise Nedea
Published On: October 10, 2020 · 12:00 AM
Last Checked: October 10, 2020
Next Review: October 10, 2025