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Table 2 Pearson correlation coefficients between 13α-Diol-G (ng/ml) and testosterone (ng/ml) by different health conditions

From: Testosterone and androstanediol glucuronide among men in NHANES III

   Correlation coefficient 95% confidence interval P value
Age, years < 65 0.17 0.12 to 0.23 < 0.001
≥65 0.12 0.02 to 0.22 0.03
Tertiles of BMI, kg/m2 1st (≤23) 0.25 0.17 to 0.34 < 0.001
2nd (24–27) 0.17 0.08 to 0.25 < 0.001
3rd (≥27) 0.22 0.13 to 0.30 < 0.001
Smoking Never 0.22 0.13 to 0.30 < 0.001
Former 0.19 0.1 to 0.27 < 0.001
Current 0.20 0.11 to 0.28 < 0.001
Health statusa Good 0.24 0.12 to 0.25 < 0.001
Poor 0.17 0.09 to 0.25 < 0.001
Self-rated health Excellent 0.21 0.14 to 0.3 < 0.001
Very good 0.17 0.06 to 0.27 0.002
Good 0.12 0.03 to 0.21 0.01
Fair 0.11 −0.07 to 0.27 0.24
Poor −0.22 − 0.64 to 0.28 0.37
Ethnicity Non-Hispanic white 0.20 0.11 to 0.25 0.18
Non-Hispanic black 0.25 0.1 to 0.29 0.20
Mexican-American 0.28 0.13 to 0.32 0.22
Other 0.12 −0.06 to 0.43 0.20
  1. aPoor health status was defined as self-reported physician diagnosis of any of the following diseases: diabetes, hypertension, high cholesterol, heart disease or stroke, or at least one hospitalization during the past 12 months