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Table 4 Comparisons of body composition between quartiles of Δ-cortisol in men and women.

From: Salivary cortisol differs with age and sex and shows inverse associations with WHR in Swedish women: a cross-sectional study

  WHR Waist circumference
  n m sd p n m sd p
Women         
Adjusted for age         
qrtl 1 Δ-cortisol 205 0.849 0.072 ref. 205 87.56 13.50 ref.
qrtl 2 Δ-cortisol 223 0.829 0.075 0.006 223 84.26 13.47 0.012
qrtl 3 Δ-cortisol 192 0.833 0.069 0.032 192 86.04 13.45 0.262
qrtl 4 Δ-cortisol 218 0.823 0.074 <0.001 218 83.59 13.47 0.003
Test for linearity:         
between quartiles     0.001     0.016
continuously     0.003     0.041
Adjusted for model 2a         
qrtl 1 Δ-cortisol 194 0.846 0.070 ref. 194 86.70 13.34 ref.
qrtl 2 Δ-cortisol 217 0.829 0.074 0.018 217 84.19 13.29 0.056
qrtl 3 Δ-cortisol 181 0.833 0.081 0.104 181 86.13 13.33 0.680
qrtl 4 Δ-cortisol 216 0.824 0.073 0.003 216 83.56 13.30 0.018
Test for linearity:         
between quartiles     0.009     0.071
continuously     0.009     0.119
Men         
Adjusted for age         
qrtl 1 Δ-cortisol 206 0.942 0.057 ref. 206 94.11 9.99 ref.
qrtl 2 Δ-cortisol 212 0.942 0.058 0.963 212 94.22 9.99 0.912
qrtl 3 Δ-cortisol 216 0.946 0.059 0.512 216 94.50 9.98 0.684
qrtl 4 Δ-cortisol 199 0.942 0.056 0.947 199 95.12 10.02 0.307
Test for linearity:         
between quartiles     0.787     0.291
continuously     0.957     0.310
  1. Differences between quartiles (qrtl) of Δ-cortisol (logarithmic morning salivary cortisol – logarithmic evening salivary cortisol) were examined by GLM (general linear model), using quartile 1 as reference.
  2. aModel 2 = age, leisure time physical activity, smoking, education, alkohol consumption, oral contraceptives, and estrogen replacements.