The digit ratio (2D:4D) in China: A meta‐analysis

@article{Xu2015TheDR,
  title={The digit ratio (2D:4D) in China: A meta‐analysis},
  author={Yin Xu and Yong Zheng},
  journal={American Journal of Human Biology},
  year={2015},
  volume={27}
}
To explore the 2D:4D in China (mainland and Taiwan) and to analyze the influences of ethnicity, digit measurement methods, age, and latitude on Chinese 2D:4D. 
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Direct Versus Indirect Measurement of Digit Ratio (2D:4D)
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The 2D:4D ratio, a proxy for prenatal androgen levels, differs in men with and without MS
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COMPARATIVE STUDY OF FINGER LENGTHS AND DIGIT RATIO IN MEN OF ANCONA , ITALY AND ORADEA , ROMANIA
TLDR
The aim was to identify possible significant differences between the two male populations coherently the digit ratio, and the results are important because demonstrate the differences among the two men populations coherentially the digit ratios.
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References

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Meta‐analysis of digit ratio 2D:4D shows greater sex difference in the right hand
TLDR
The sex difference in the length ratio of the second and fourth digits (2D:4D), which likely reflects prenatal testosterone levels in humans, is described and the loss of reliability observed in 2D: 4D based on self‐measured finger lengths is inferred.
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TLDR
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TLDR
There is sexual difference in digit ratio, and children' s digit ratio is not related to age.
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TLDR
There was a sex-specific correlation between 2D:4D and handgrip strength, and this relationship may be driven by sexual selection operating on fetal programming.
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TLDR
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TLDR
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The 2nd–4th digit ratio (2D:4D) and neck circumference: implications for risk factors in coronary heart disease
TLDR
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