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Table 4 Association between quantitative ultrasound (QUS) measures and menstrual irregularity adjusted by each hormonal factor separately

From: Menstrual irregularity and bone mass in premenopausal women: Cross-sectional associations with testosterone and SHBG

  Adjusted model *
β (95% CI)
Adjusted model
+ testosterone
β (95% CI)
Adjusted model
+ SHBG
β (95% CI)
Adjusted model
+FAI
β (95% CI)
BUA     
Regular cycle Ref Ref Ref Ref
Irregular cycle 0.31 (-0.01, 0.64) 0.29 (-0.04, 0.61) 0.28 (-0.05, 0.61) 0.25 (-0.07, 0.58)
SOS     
Regular cycle Ref Ref Ref Ref
Irregular cycle 0.38 (0.05, 0.71) 0.36 (0.03, 0.68) 0.31 (-0.02, 0.64) 0.30 (-0.03, 0.63)
QUI     
Regular cycle Ref Ref Ref Ref
Irregular cycle 0.38 (0.05, 0.71) 0.36 (0.03, 0.68) 0.32 (-0.01, 0.65) 0.31 (-0.02, 0.63)
  1. BUA = broadband ultrasound attenuation. SOS = speed of sound. QUI = quantitative ultrasound index. SHBG = sex hormone-binding globulin. FAI = free androgen index. QUS measures were log transformed before converted into standardized values. β = standardised beta coefficients. *Adjusted model controlled for age and BMI. Bolder denotes significant association (P < 0.05).