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Table 1 Demographic and lifestyle factors, and plasma concentrations of hormones and SHBG for the 1036 men

From: Second to fourth digit ratio (2D:4D) and concentrations of circulating sex hormones in adulthood

Characteristic Category Values
Age in years, mean (SD)   54 (9)
Country of birth, n (%) Australia/New Zealand/UK/Other 816 (79)
  Italy 129 (12)
  Greece 91 (9)
Smoking, n (%) Never 459 (44)
  Current 128 (12)
  Former 449 (43)
Alcohol consumption, n (%) Abstainers 126 (12)
  Ex drinkers 49 (5)
  Low 693 (67)
  Medium 97 (9)
  High 71 (7)
BMI (kg/m2), mean (SD)   26.9 (3.4)
Right 2D:4D, mean (SD) Overall 0.946 (0.036)
  Australia/New Zealand/UK/Other 0.948 (0.035)
  Italy 0.938 (0.041)
  Greece 0.941 (0.035)
Left 2D:4D, mean (SD) Overall 0.954 (0.035)
  Australia/New Zealand/UK/Other 0.955 (0.035)
  Italy 0.949 (0.039)
  Greece 0.955 (0.032)
Δr-l2D:4D, mean (SD) Overall -0.008 (0.033)
  Australia/New Zealand/UK/Other -0.007 (0.031)
  Italy -0.011 (0.041)
  Greece -0.014 (0.034)
Hormones and SHBG, geometric mean (interquartile range) 1  
Total testosterone (nmol/L)   15.5 (12.3,19.5)
Free testosterone (pmol/L)   244.1 (189.3,306.1)
Total oestradiol (pmol/L)   103.0 (87.0,122.0)
Free oestradiol (pmol/L)   1.7 (1.4,2.0)
DHEAS (μmol/L)   3.5 (2.3,5.2)
Androstenedione (nmol/L)   4.1 (3.2,5.4)
Androstenediol glucoronide (ng/mL)   14.8 (10.3,20.2)
SHBG (nmol/L)   35.2 (27.0,43.8)
Testosterone:oestradiol ratio   151.6 (118.5,187.3)
  1. 1At baseline blood collection. Number of missing measures were 2 for testosterone, 2 for free testosterone,and 66 for androstenediol glucoronide.