International Index of Erectile Function – IIEF-5
A brief self-report tool used to evaluate the presence and severity of erectile dysfunction.
Scale Development & Technical Details
Scale Overview
The International Index of Erectile Function – IIEF-5 was developed by Rosen, R. C., Cappelleri, J. C., Smith, M. D., Lipsky, J., Pena, B. M. (1999). It is designed to measure Erectile Dysfunction. The scale is intended for use with Adult men.
Scale Structure
This instrument consists of 5 items.
Response Format
Respondents rate each item using a custom response format.
Response anchors: 1 = Very low / Almost never / Extremely difficult, 2 = Low / A few times / Very difficult, 3 = Moderate / Sometimes / Difficult, 4 = High / Most times / Slightly difficult, 5 = Very high / Almost always / Not difficult.
Scoring
Items are summed to produce a total score.
Total scores range from 1 to 25. Interpretation guidelines:
- Severe Erectile Dysfunction: 1 – 7
- Moderate Erectile Dysfunction: 8 – 11
- Mild-to-moderate Erectile Dysfunction: 12 – 16
- Mild Erectile Dysfunction: 17 – 21
- No Erectile Dysfunction: 22 – 25
Administration
The scale is self-administered and typically takes approximately 5 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.