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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)   60 (6)
Age at menopause in years, mean (SD)   50 (4)
Country of birth, n (%) Australia/New Zealand/UK/Other 496 (80)
  Italy 83 (13)
  Greece 41 (7)
Smoking, n (%) Never 446 (72)
  Current 42 (7)
  Former 132 (21)
Alcohol consumption, n (%) Abstainers 267 (43)
  Ex drinkers 16 (3)
  Low 268 (43)
  Medium 57 (9)
  High 12 (2)
Age at menarche, n (%) <12 104 (17)
  12 126 (20)
  13 149 (24)
  >= 14 241 (39)
Parity, n (%) Nulliparous 72 (12)
  <25 years and 1 pregnancy 38 (6)
  <25 years and >1 pregnancy 175 (28)
  >= 25 years and 1 pregnancy 169 (27)
  >= 25 years and >1 pregnancy 166 (27)
Duration of lactation, n (%) never 156 (25)
  <= 6 months 123 (20)
  7-12 months 104 (17)
  13-24 months 141 (23)
  > 24 months 96 (15)
Oral Contraceptive use, n (%) Never 326 (53)
  Ex 294 (47)
HRT use, n (%) Never 531 (86)
  Ex 89 (14)
BMI (kg/m2), mean (SD)   27.3 (4.9)
Right 2D:4D, mean (SD) Overall 0.953 (0.035)
  Australia/New Zealand/UK/Other 0.954 (0.035)
  Italy 0.954 (0.034)
  Greece 0.945 (0.030)
Left 2D:4D, mean (SD) Overall 0.961 (0.036)
  Australia/New Zealand/UK/Other 0.961 (0.036)
  Italy 0.963 (0.036)
  Greece 0.962 (0.038)
Δr-l2D:4D, mean (SD) Overall -0.008 (0.035)
  Australia/New Zealand/UK/Other -0.007 (0.035)
  Italy -0.010 (0.035)
  Greece -0.017 (0.035)
Hormones and SHBG, geometric mean (interquartile range) 1  
Total testosterone (nmol/L)   0.7 (0.4,1.1)
Free testosterone (pmol/L)   7.5 (3.5,12.5)
Total oestradiol (pmol/L)   57.0 (45.0,73.0)
Free oestradiol (pmol/L)   0.8 (0.6,1.1)
DHEAS (μmol/L)   1.5 (0.9,2.5)
Androstenedione (nmol/L)   2.5 (1.6,3.5)
Oestrone sulphate (ng/mL)   1.0 (0.7,1.4)
SHBG (nmol/L)   50.4 (37.7,68.3)
Testosterone:oestradiol ratio   12.5 (7.8,18.4)
  1. 1At baseline blood collection. Number of missing measures were 54 for free testosterone and 13 for oestrone sulphate.