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International Index of Erectile Function-5 (IIEF-5)
Please visit this website for more information about the instrument: International Index of Erectile Function-5
Supplemental: Parkinson's Disease (PD)
Short Description of Instrument
The International Index of Erectile Function (IIEF-5), also known as The Sexual Health Inventory for Men (SHIM),  is a widely used brief, patient-administered scale for the screening and diagnosis of erectile dysfunction (ED) and severity of ED in clinical practice and research. It has been used in over 20 studies on ED prevalence and over 20 studies on ED interventions. It has been translated into 30 languages.
Comments/Special Instructions
Widely used, multi-dimensional self-report instrument for the evaluation of male sexual function
Scoring and Psychometric Properties
Scoring: The IIEF-5 is comprised of 5 questions that are scored from 0-5.
Psychometric Properties: The instrument is both highly sensitive and specific to the effects of treatment in male patients with ED. Collectively, validation studies have demonstrated strong evidence of the overall validity and reliability of the IIEF.
Strengths: Comprehensive, validated in different cohorts with sexual dysfunction, and is the "gold standard" assessment for male sexual dysfunction.
Weaknesses: Not been validated in PD. However, has been used in PD studies, including a large multicentric study (Raciti et al., 2020).
Key Reference:
Rosen RC, Cappelleri JC, Smith MD, Lipsky J, Pena BM. Development and evaluation of an abridged, 5-item version of the International Index of Erectile Function (IIEF-5) as a diagnostic tool for erectile dysfunction. Int J of Import Res. 1999 Dec;11(6):319-26.
Additional References:
Raciti L, De Cola MC, Ortelli P, Corallo F, Lo Buono V, Morini E, Quattrini F, Filoni S, Calabr? RS. Sexual Dysfunction in Parkinson Disease: A Multicenter Italian Cross-sectional Study on a Still Overlooked Problem. J Sex Med. 2020 Oct;17(10):1914-1925.
Shalash A, Hamid E, Elrassas H, Abushouk AI, Salem HH. Sexual dysfunction in male patients with Parkinson's disease: related factors and impact on quality of life. Neurol Sci. 2020 Aug;41(8):2201-2206.
Document last updated August 2022