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Tri Lidya Anggraini
Universitas Prima Indonesia
Health Professions Medicine & Pharmacology Nursing Public Health Veterinary

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Comparison Of The 2D:4D Ratio Between Male And Female Students At Methodist Antiochia Pancurbatu Junior High School Angel Grace Kesya br Sinaga; Tri Lidya Anggraini; Yohani Theresia
Public Health Journal Vol. 3 No. 4 (2026): In Progress
Publisher : Teewan Journal Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62710/9kqsdn56

Abstract

The 2D:4D ratio (index to ring finger length) is a non-invasive biomarker of prenatal sex hormone exposure, consistently reported to be lower in males than in females. However, data on this ratio among Indonesian adolescents remain limited. This study analyzed the correlation between the 2D:4D ratio and sex among junior high school students at SMP Methodist Antiokhia Pancurbatu. An observational analytic cross-sectional study used total sampling of 394 respondents (198 males, 196 females). Finger lengths were measured with a millimeter ruler, and the ratio was calculated by dividing 2D length by 4D length. Data were tested for normality with the Kolmogorov-Smirnov test and compared between sexes using the Mann-Whitney U test. Mean index and ring finger lengths were 6.56 ± 0.55 cm and 6.46 ± 0.63 cm, with an overall mean 2D:4D ratio of 1.02 ± 0.10. Absolute finger lengths differed significantly between sexes for both the index finger (U = 12539.00; Z = −6.119; p < 0.001) and ring finger (U = 12978.00; Z = −5.714; p < 0.001), with males having longer fingers. However, the 2D:4D ratio did not differ significantly between males (1.018 ± 0.096) and females (1.025 ± 0.099) (U = 18560.00; Z = −0.749; p = 0.454). These findings suggest that absolute finger dimensions reflect clear postnatal sexual dimorphism, whereas the 2D:4D ratio shows only a very small, statistically undetectable difference in this population, likely influenced by measurement precision and sample characteristics.
CORRELATION BETWEEN THE 2D:4D RATIO AND HEIGHT AMONG STUDENTS AT METHODIST ANTIOKHIA PANCURBATU JUNIOR HIGH SCHOOL Gievani Orpha Ladisia Br. Tarigan; Tri Lidya Anggraini; Yohani Theresia
Public Health Journal Vol. 3 No. 3 (2026): July-September, In Progress
Publisher : Teewan Journal Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62710/3jqp4n30

Abstract

Background: An anthropometric measure linked to prenatal sex hormone exposure, the 2D:4D ratio is thought to be related to features of body development. Nevertheless, research on the connection between teenage height and the 2D:4D ratio is still conflicting. Goal: To ascertain the correlation between students' height and the second-to-fourth-digit (2D:4D) ratio at Methodist Antioch Junior High School in Pancurbatu. Methods: This was an observational analytic study with a cross-sectional design involving 394 students selected via total sampling. Measurements were taken of index finger length, ring finger length, and height; the relationship between the second digit to the fourth digit (2D:4D) ratio and height was then analyzed using the Spearman correlation test. Results: The mean second digit to the fourth digit (2D:4D) ratio was 1.02 ± 0.10, and the mean height was 150.05 ± 9.14 cm. No significant relationship was found between the second digit to the fourth digit (2D:4D) ratio and height (ρ = 0.014; p = 0.776). Conversely, the lengths of the index finger (ρ = 0.303; p < 0.001) and ring finger (ρ = 0.217; p < 0.001) reflected a positive relationship with height. Conclusion: There is no significant relationship between the 2D:4D ratio and height among students at Methodist Antiokhia Junior High School, Pancurbatu, although individual finger lengths are positively correlated with height.
Co-Authors Angel Grace Kesya br Sinaga Gievani Orpha Ladisia Br. Tarigan Theresia, Yohani