The mathematical formula of the intravaginal ejaculation latency time (IELT) distribution of lifelong premature ejaculation differs from the IELT distribution formula of men in the general male population
نویسندگان
چکیده
PURPOSE To find the most accurate mathematical description of the intravaginal ejaculation latency time (IELT) distribution in the general male population. MATERIALS AND METHODS We compared the fitness of various well-known mathematical distributions with the IELT distribution of two previously published stopwatch studies of the Caucasian general male population and a stopwatch study of Dutch Caucasian men with lifelong premature ejaculation (PE). The accuracy of fitness is expressed by the Goodness of Fit (GOF). The smaller the GOF, the more accurate is the fitness. RESULTS The 3 IELT distributions are gamma distributions, but the IELT distribution of lifelong PE is another gamma distribution than the IELT distribution of men in the general male population. The Lognormal distribution of the gamma distributions most accurately fits the IELT distribution of 965 men in the general population, with a GOF of 0.057. The Gumbel Max distribution most accurately fits the IELT distribution of 110 men with lifelong PE with a GOF of 0.179. There are more men with lifelong PE ejaculating within 30 and 60 seconds than can be extrapolated from the probability density curve of the Lognormal IELT distribution of men in the general population. CONCLUSIONS Men with lifelong PE have a distinct IELT distribution, e.g., a Gumbel Max IELT distribution, that can only be retrieved from the general male population Lognormal IELT distribution when thousands of men would participate in a IELT stopwatch study. The mathematical formula of the Lognormal IELT distribution is useful for epidemiological research of the IELT.
منابع مشابه
The effectiveness of Integrative Behavioral Couple Therapy (IBCT) on Sexual Self-Efficacy, Sexual Self-Concept in People with Acquired Premature Ejaculation
Determining the effectiveness of couple's integrated behavioral therapy on sexual self-efficacy and sexual self-concept was acquired in individuals with acquired premature ejaculation. The research method was quasi-experimental with pretest, posttest, and follow-up with the control group. The statistical population included all married people aged 25 to 45 years who had been referred to psychol...
متن کاملThe 5-HT2C receptor gene Cys23Ser polymorphism influences the intravaginal ejaculation latency time in Dutch Caucasian men with lifelong premature ejaculation
It has been postulated that the persistent short intravaginal ejaculation latency time (IELT) of men with lifelong premature ejaculation (LPE) is related to 5-hydroxytryptamine (HT)2C receptor functioning. The aim of this study was to investigate the relationship of Cys23Ser 5-HT2C receptor gene polymorphism and the duration of IELT in men with LPE. Therefore, a prospective study was conducted ...
متن کاملIs there a correlation between intravaginal ejaculatory latency time and enuresis? An exploratory study
INTRODUCTION Premature ejaculation (PE) is the most common male sexual dysfunction. Monosymptomatic enuresis (ME) is nocturnal bed wetting, without any daytime symptoms. Recent clinical studies report an association between lifelong PE and ME. The purpose of this study was to compare the intravaginal ejaculatory time (IELT) between lifelong PE in men with and without ME. The goal was to determi...
متن کاملPharmacotherapy for premature ejaculation.
INTRODUCTION Four premature ejaculation (PE) subtypes are distinguished on the basis of the duration of the intravaginal ejaculation latency time (IELT), its course in life, and frequency of complaints. Since the 1930s oral drug treatment and local anesthetics have been used to treat PE. Apart from dapoxetine, all currently available drugs to treat PE (SSRIs, clomipramine, and local anesthetics...
متن کاملToward Evidence-Based Genetic Research on Lifelong Premature Ejaculation: A Critical Evaluation of Methodology
Recently, four premature ejaculation (PE) subtypes have been distinguished on the basis of the duration of the intravaginal ejaculation latency time (IELT). These four PE subtypes have different etiologies and pathogeneses. Genetic research on PE should consider the existence of these PE subtypes and the accurate measurement of the IELT with a stopwatch. Currently, three methods of genetic rese...
متن کامل