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The relationship between the second-to-fourth digit ratios and lifelong premature ejaculation: a prospective, comparative study.
Andrology 2017; 5(3):535-540A

Abstract

To investigate the relationship between the fetal androgen exposure and lifelong premature ejaculation by using the ratio of the second (index)-to-fourth (ring) digits (2D : 4D) which is the marker for higher prenatal androgen exposure. Totally 65 patients with lifelong premature ejaculation and 65 control cases without any ejaculatory complaints were enrolled in the study. A detailed medical history was obtained and self-estimated intravaginal ejaculatory latency times were recorded. Ejaculation function was evaluated by Premature Ejaculation Diagnostic Tool. The lengths of the second and fourth digits of both hands were measured and 2D : 4Ds were calculated. The mean 2D : 4D values were 0.964 ± 0.024 vs. 0.978 ± 0.032 (p = 0.004) for the right hand and 0.966 ± 0.023 vs. 0.979 ± 0.032 (p = 0.006) for the left hand in lifelong premature ejaculation and control groups, respectively. Significant correlations were observed between the digit ratios and self-estimated intravaginal ejaculatory latency time (r = 0.258, p = 0.003 for right hand; r = 0.240, p = 0.06 for left hand), and between the digit ratios and total Premature Ejaculation Diagnostic Tool scores (r = -0.263, p = 0.003 for right hand; r = -0.238, p = 0.06 for left hand). Individuals with lower digit ratios have higher risks of shorter intravaginal ejaculatory latency times. These results suggest that increased fetal androgen exposure may be a new risk factor for the development of lifelong premature ejaculation.

Authors+Show Affiliations

Department of Urology, Bozyaka Training and Research Hospital, Izmir, Turkey.Department of Endocrinology and Metabolism, Bozyaka Training and Research Hospital, Izmir, Turkey.Department of Biostatistics, Ege University Faculty of Medicine, Izmir, Turkey.Department of Urology, Bozyaka Training and Research Hospital, Izmir, Turkey.Department of Urology, Bozyaka Training and Research Hospital, Izmir, Turkey.Department of Urology, Bozyaka Training and Research Hospital, Izmir, Turkey.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

28217932

Citation

Bolat, D, et al. "The Relationship Between the Second-to-fourth Digit Ratios and Lifelong Premature Ejaculation: a Prospective, Comparative Study." Andrology, vol. 5, no. 3, 2017, pp. 535-540.
Bolat D, Kocabas GU, Kose T, et al. The relationship between the second-to-fourth digit ratios and lifelong premature ejaculation: a prospective, comparative study. Andrology. 2017;5(3):535-540.
Bolat, D., Kocabas, G. U., Kose, T., Degirmenci, T., Aydin, M. E., & Dincel, C. (2017). The relationship between the second-to-fourth digit ratios and lifelong premature ejaculation: a prospective, comparative study. Andrology, 5(3), pp. 535-540. doi:10.1111/andr.12318.
Bolat D, et al. The Relationship Between the Second-to-fourth Digit Ratios and Lifelong Premature Ejaculation: a Prospective, Comparative Study. Andrology. 2017;5(3):535-540. PubMed PMID: 28217932.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The relationship between the second-to-fourth digit ratios and lifelong premature ejaculation: a prospective, comparative study. AU - Bolat,D, AU - Kocabas,G U, AU - Kose,T, AU - Degirmenci,T, AU - Aydin,M E, AU - Dincel,C, Y1 - 2017/02/19/ PY - 2016/09/01/received PY - 2016/10/20/revised PY - 2016/11/23/accepted PY - 2017/2/22/pubmed PY - 2017/4/26/medline PY - 2017/2/21/entrez KW - 2D : 4D, fetal androgen KW - digit ratio KW - intravaginal ejaculatory latency time KW - premature ejaculation KW - sexual dysfunction SP - 535 EP - 540 JF - Andrology JO - Andrology VL - 5 IS - 3 N2 - To investigate the relationship between the fetal androgen exposure and lifelong premature ejaculation by using the ratio of the second (index)-to-fourth (ring) digits (2D : 4D) which is the marker for higher prenatal androgen exposure. Totally 65 patients with lifelong premature ejaculation and 65 control cases without any ejaculatory complaints were enrolled in the study. A detailed medical history was obtained and self-estimated intravaginal ejaculatory latency times were recorded. Ejaculation function was evaluated by Premature Ejaculation Diagnostic Tool. The lengths of the second and fourth digits of both hands were measured and 2D : 4Ds were calculated. The mean 2D : 4D values were 0.964 ± 0.024 vs. 0.978 ± 0.032 (p = 0.004) for the right hand and 0.966 ± 0.023 vs. 0.979 ± 0.032 (p = 0.006) for the left hand in lifelong premature ejaculation and control groups, respectively. Significant correlations were observed between the digit ratios and self-estimated intravaginal ejaculatory latency time (r = 0.258, p = 0.003 for right hand; r = 0.240, p = 0.06 for left hand), and between the digit ratios and total Premature Ejaculation Diagnostic Tool scores (r = -0.263, p = 0.003 for right hand; r = -0.238, p = 0.06 for left hand). Individuals with lower digit ratios have higher risks of shorter intravaginal ejaculatory latency times. These results suggest that increased fetal androgen exposure may be a new risk factor for the development of lifelong premature ejaculation. SN - 2047-2927 UR - https://www.unboundmedicine.com/medline/citation/28217932/The_relationship_between_the_second_to_fourth_digit_ratios_and_lifelong_premature_ejaculation:_a_prospective_comparative_study_ L2 - https://doi.org/10.1111/andr.12318 DB - PRIME DP - Unbound Medicine ER -