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

Table 2 Spearman correlation coefficients (r) for associations of quantitative ultrasound measures and continuous variables in the study

Characteristics	BUA		SOS		QUI
	r	P	r	P	r	P
Anthropometrics
Body mass index	0.17	< 0.01	-0.01	0.79	0.05	0.35
Waist circumference	0.17	< 0.01	-0.01	0.86	0.05	0.32
Waist-hip-ratio	0.14	0.01	0.03	0.57	0.07	0.16
Hormonal factors
Testosterone	0.14	0.01	0.09	0.08	0.11	0.04
SHBG	-0.16	< 0.01	-0.14	0.01	-0.16	< 0.01
Free androgen index	0.21	< 0.001	0.16	< 0.01	0.19	< 0.001

SHBG = sex hormone-binding globulin. BUA = broadband ultrasound attenuation. SOS = speed of sound. QUI = quantitative ultrasound index. Bold denotes significant association (P < 0.05).

ISSN: 1471-2474