Table 2 A comparison of clinical features and mean digit ratios (2D:4D) among women with four clinical phenotypes of PCOS and female controls.

Age (y)

28.3 ± 4.5

27.8 ± 4.5^a

31.4 ± 4.4^a

29.3 ± 4.7^a

28.5 ± 3.9^a

26.9 ± 4.2^a

BMI (kg/m²)

32.2 ± 8.4

33.5 ± 8.2^a

40.1 ± 5.3^a

31.4 ± 7.1^a

22.2 ± 4.6^b

24.1 ± 3.7^b

Modified FG Score*

10.7 ± 6.6

11.9 ± 7.0^a

12.0 ± 3.9^a

10.7 ± 3.8^a

2.3 ± 2.7^b

3.7 ± 2.9^b

Total Testosterone (nmol/l)

3.6 ± 1.8

3.8 ± 2.0^a

2.9 ± 1.7^{a, b}

2.7 ± 0.6^{a, b}

3.3 ± 1.2^{a, b}

2.8 ± 0.9^b

Free Androgen Index (%)

12.4 ± 9.4

15.3 ± 10.1^a

9.9 ± 3.7^{a, b}

6.8 ± 3.1^b

4.3 ± 1.8^b

5.7 ± 2.9^b

Total Follicle Count

41.1 ± 15.0

44.0 ± 15.1^a

15.6 ± 3.1^c

35.9 ± 10.4^b

44.3 ± 12.1^{a, b}

15.7 ± 5.5^c

Ovarian Volume (ml)

9.7 ± 3.2

10.1 ± 3.4^a

7.2 ± 3.0^{a, b}

9.1 ± 2.9^a

9.1 ± 2.1^a

6.1 ± 2.3^b

Menstrual Cycle Length (d)

109.0 ± 99.7

127.4 ± 98.3^a

75.5 ± 12.5^a

31.7 ± 4.7^b

101.1 ± 117.2^a

29.7 ± 3.0^b

Left Hand 2D:4D

0.982 ± 0.030

0.982 ± 0.029^a

0.981 ± 0.060^a

0.982 ± 0.028^a

0.983 ± 0.032^a

0.974 ± 0.037^a

Right Hand 2D:4D

0.981 ± 0.028

0.981 ± 0.029^a

0.965 ± 0.028^a

0.986 ± 0.027^a

0.983 ± 0.027^a

0.972 ± 0.028^a