Effect of digit ratio on contact heat evoked potentials in China

The correlation between CHEP parameters and digit ratio, age, gender, and height was analyzed by using linear regression. The linear regression equation was Y = −42.354 + 0.720 × age + 0.796 × height + 237.795 × right digit ratio. [3] The underlying reason for the conflicting results discovered in this study may be because digit ratio is mainly affected by fetal sex hormones, and established during early embryogenesis[3–5]; on the other hand, the relationships between digit ratio and levels of sex hormones in adults are less clear, as many correlation studies of digit ratio and adult sex steroids have concluded that this association is statistically non-significant.