TABLE 5.

Relationship of sex hormones to gray matter volumes in women, while controlling for OC-use.

	HippocampusL		HippocampusR		MFG_L		MFG_R
	b	t	b	t	b	t	b	T
OC-use	–0.20	–1.48	–0.17	–1.35	–0.46	–3.09∗∗	–0.10	–0.66
Age	–0.01	–0.17	–0.07	–0.91	–0.18	–2.05∗	–0.14	–1.55
TIV	0.51	6.97∗∗∗	0.60	8.50∗∗∗	0.24	2.93∗∗	0.37	4.48∗∗∗
Estradiol	–0.10	–1.03	–0.08	–0.85	–0.05	–0.46	–0.004	–0.04
Progesterone	0.04	0.49	0.05	0.63	–0.16	–1.60	–0.002	–0.02
Testosterone	0.25	2.40∗	0.17	1.68	0.16	1.37	–0.13	–1.10
OC × Estradiol	0.02	0.24	0.02	0.27	0.15	1.49	0.05	0.46
OC × Prog	–0.01	–0.13	–0.05	–0.54	0.15	1.44	–0.01	–0.13
OC × Test	–0.15	–0.93	–0.09	–0.57	–0.51	–2.90∗∗	–0.02	–0.09

MFG = middle frontal gyrus. L = left, R = right. ^∗p < 0.05, ^∗∗p < 0.01, ^∗∗∗p < 0.001. Significant effects are highlighted in bold font.