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Published on: April 17, 2019
A multinational population survey of intravaginal ejaculation latency time
Marcel D Waldinger1, Paul Quinn, Maria Dilleen
1Department of Psychiatry and Neurosexology, Leyenburg HagaHospital, The Hague, and Department of Psychopharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, the Netherlands. md@waldinger.demon.nl
The median intravaginal ejaculation latency time (IELT) in men is 5.4 minutes, varying by country and decreasing with age. This stopwatch-assessed IELT distribution in the general population provides crucial clinical trial data.
Area of Science:
- Sexual health research
- Clinical trial methodology
- Male reproductive health
Background:
- Intravaginal ejaculation latency time (IELT) is a key metric in clinical trials for premature ejaculation treatments.
- Stopwatch assessment of IELT offers higher accuracy than retrospective methods.
- The IELT distribution in the general male population remained uncharacterized.
Purpose of the Study:
- To determine the stopwatch-assessed IELT distribution across diverse international male cohorts.
- To establish normative IELT data for clinical and research applications.
Main Methods:
- Recruited 500 couples from five countries (Netherlands, UK, Spain, Turkey, US).
- Included men aged 18+ in stable heterosexual relationships.
- Recorded stopwatch-timed IELTs over 4 weeks, noting circumcision status and condom use.
Main Results:
- The IELT distribution was positively skewed, with a median of 5.4 minutes.
- Median IELT significantly decreased with age (6.5 min for 18-30 yrs to 4.3 min for >51 yrs).
- Median IELT varied by country (lowest in Turkey: 3.7 min) and was not affected by condom use or circumcision status (excluding Turkey).
Conclusions:
- The IELT distribution is positively skewed with a median of 5.4 minutes, showing international variations.
- Median IELT declines with increasing age.
- Condom use and circumcision status (in most countries) did not significantly impact median IELT.
