Table 2.

Mean plasma concentrations of enterolactone (nmol/L) at baseline according to participant characteristics among the controls (n = 733) in a subsample from the MDC cohort

Participant characteristicsNo. of subjectsMean95% CIP*
Age (y)0.23
    44-5016222.219.6-24.8
    50-5515920.117.5-22.7
    55-6017019.416.8-21.9
    60-6513218.315.5-21.2
    65-706516.112.1-20.2
    70-754522.117.0-27.2
Season of blood collection0.19
    Winter15420.618.0-23.3
    Spring22618.416.3-20.6
    Summer10119.215.9-22.4
    Fall25220.818.8-22.9
Educational status<0.001
    Elementary30517.215.4-19.1
    Primary and secondary22620.017.8-22.2
    Upper secondary4619.915.1-24.7
    Further education without a degree4620.515.7-25.2
    University degree10626.623.4-29.8
Smoking status<0.001
    Current smokers20016.213.9-18.5
    Ex-smokers19719.216.9-21.5
    Nonsmokers33522.420.6-24.1
Alcohol consumption0.007
    Zero consumers5514.910.5-19.3
    <15 g/d56120.018.6-21.3
    15-30 g/d10022.919.7-26.2
    >30 g/d1613.55.4-21.6
BMI (kg/m2)0.001
    ≤2536722.020.3-23.7
    25-3024518.716.7-20.8
    >3012115.412.5-18.3
Leisure-time physical activity0.005
    Quartile 118316.714.3-19.1
    Quartile 218220.117.7-22.5
    Quartile 316822.920.4-25.4
    Quartile 419719.917.6-22.2
Household activities (h/wk)0.93
    0-910118.915.6-22.1
    10-1927920.618.7-22.5
    20-2921919.317.1-21.5
    ≥3011719.516.5-22.6
Current use of menopausal hormone therapy0.91
    No55319.618.3-21.0
    Yes13319.716.9-22.6
Current use of antibiotics0.79
    No71819.718.5-20.9
    Yes1524.215.8-32.6
  • * Test of differences in means (loge transformed) using the general linear model, adjusted for age and date of blood collection.

  • Indicates statistically significant differences in means at the 0.05 level using Tukey's multiple comparison test within each variable.