A Multi-National Population Survey of Intravaginal Ejaculation Latency Time.

A Multi-National Population Survey of Intravaginal Ejaculation Latency Time, Marcel D. Waldinger, Leyenburg Haga Hospital, The Netherlands, and Utrecht Institute for Pharmaceutical Sciences and Rudolf Magnus Institute for Neurosciences, The Netherlands; Paul Quinn, Maria Dilleen, Rajiv Mundayat, and Mitradev Boolell, Pfizer Global Research and Development, United Kingdom; Dave H. Schweitzer, Department of Internal Medicine and Endocrinology, The Netherlands

We studied the stopwatch-assessed intravaginal ejaculation latency time (IELT) distribution in large random male cohorts of different countries. A total of 500 couples were recruited from 5 countries: The Netherlands, United Kingdom, Spain, Turkey, and the U.S. Enrolled men were aged of 18 years or older and had been in a stable heterosexual relationship for at least 6 months with regular sexual intercourse. The surveyed population was not included or excluded by their ejaculatory status and comorbidities. This survey was performed on a normal general population. Sexual events and stopwatch-timed IELTs during a 4-week period were recorded. A total of 4,000 completed sexual events were recorded over the 4-week study period, with a mean frequency of 8 [+ or -] 4 events per couple. Frequency of sexual intercourse ranged from a mean of 7 events per couple in Spain and Netherlands to a mean of 10 in the U.S. Frequency of sexual intercourse was similar across all age groups. The distribution of the IELT in all the 5 countries was positively skewed with a median IELT of 5.5 minutes. The median IELT decreased significantly with age, from 6.5 minutes in the 18-30 age group to 4 minutes in the group older than 51 years. The median IELT also varied between countries, with the median value for Turkey being the lowest.