Table 2 Demographic and lifestyle factors, and plasma concentrations of hormones and SHBG for the 620 women
From: Second to fourth digit ratio (2D:4D) and concentrations of circulating sex hormones in adulthood
Characteristic | Category | Values |
|---|---|---|
Age in years, mean (SD) | Â | 60 (6) |
Age at menopause in years, mean (SD) | Â | 50 (4) |
Country of birth, n (%) | Australia/New Zealand/UK/Other | 496 (80) |
| Â | Italy | 83 (13) |
| Â | Greece | 41 (7) |
Smoking, n (%) | Never | 446 (72) |
| Â | Current | 42 (7) |
| Â | Former | 132 (21) |
Alcohol consumption, n (%) | Abstainers | 267 (43) |
| Â | Ex drinkers | 16 (3) |
| Â | Low | 268 (43) |
| Â | Medium | 57 (9) |
| Â | High | 12 (2) |
Age at menarche, n (%) | <12 | 104 (17) |
| Â | 12 | 126 (20) |
| Â | 13 | 149 (24) |
| Â | >= 14 | 241 (39) |
Parity, n (%) | Nulliparous | 72 (12) |
| Â | <25 years and 1 pregnancy | 38 (6) |
| Â | <25 years and >1 pregnancy | 175 (28) |
| Â | >= 25 years and 1 pregnancy | 169 (27) |
| Â | >= 25 years and >1 pregnancy | 166 (27) |
Duration of lactation, n (%) | never | 156 (25) |
| Â | <= 6 months | 123 (20) |
| Â | 7-12 months | 104 (17) |
| Â | 13-24 months | 141 (23) |
| Â | > 24 months | 96 (15) |
Oral Contraceptive use, n (%) | Never | 326 (53) |
| Â | Ex | 294 (47) |
HRT use, n (%) | Never | 531 (86) |
| Â | Ex | 89 (14) |
BMI (kg/m2), mean (SD) | Â | 27.3 (4.9) |
Right 2D:4D, mean (SD) | Overall | 0.953 (0.035) |
| Â | Australia/New Zealand/UK/Other | 0.954 (0.035) |
| Â | Italy | 0.954 (0.034) |
| Â | Greece | 0.945 (0.030) |
Left 2D:4D, mean (SD) | Overall | 0.961 (0.036) |
| Â | Australia/New Zealand/UK/Other | 0.961 (0.036) |
| Â | Italy | 0.963 (0.036) |
| Â | Greece | 0.962 (0.038) |
Δr-l2D:4D, mean (SD) | Overall | -0.008 (0.035) |
| Â | Australia/New Zealand/UK/Other | -0.007 (0.035) |
| Â | Italy | -0.010 (0.035) |
| Â | Greece | -0.017 (0.035) |
Hormones and SHBG, geometric mean (interquartile range) 1 | Â | |
Total testosterone (nmol/L) | Â | 0.7 (0.4,1.1) |
Free testosterone (pmol/L) | Â | 7.5 (3.5,12.5) |
Total oestradiol (pmol/L) | Â | 57.0 (45.0,73.0) |
Free oestradiol (pmol/L) | Â | 0.8 (0.6,1.1) |
DHEAS (μmol/L) |  | 1.5 (0.9,2.5) |
Androstenedione (nmol/L) | Â | 2.5 (1.6,3.5) |
Oestrone sulphate (ng/mL) | Â | 1.0 (0.7,1.4) |
SHBG (nmol/L) | Â | 50.4 (37.7,68.3) |
Testosterone:oestradiol ratio | Â | 12.5 (7.8,18.4) |