From: Second to fourth digit ratio (2D:4D) and concentrations of circulating sex hormones in adulthood
Right Hand | Left Hand | Δr-l | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2D:4D tertile | mean | (95% CI) | P 2 trend | ρ 3 | P 4 | mean | (95% CI) | P 2 trend | ρ 3 | P 4 | mean | (95% CI) | P 2 trend | ρ 3 | P 4 | |
Testosterone:oestradiol | I | 15.0 | (13.0 - 16.9) | 0.39 | -0.03 | 0.38 | 14.6 | (12.6 - 16.5) | 0.56 | -0.03 | 0.52 | 14.0 | (12.1 - 16.0) | 0.24 | -0.00 | 0.98 |
II | 14.7 | (12.8 - 16.6) | 15.4 | (13.4 - 17.3) | 14.6 | (12.6 - 16.5) | ||||||||||
III | 14.2 | (12.3 - 16.1) | 14.0 | (12.1 - 16.0) | 15.1 | (13.2 - 17.1) | ||||||||||
Free testosterone:free oestradiol | I | 11.4 | (9.6 - 13.3) | 0.58 | -0.04 | 0.32 | 11.2 | (9.4 - 13.0) | 0.68 | -0.02 | 0.60 | 10.7 | (8.8 - 12.5) | 0.31 | -0.01 | 0.83 |
II | 11.6 | (9.7 - 13.4) | 11.9 | (10.1 - 13.7) | 11.4 | (9.6 - 13.3) | ||||||||||
III | 10.9 | (9.1 - 12.7) | 10.8 | (9.0 - 12.6) | 11.7 | (9.8 - 13.5) |