Table 2. Descriptive data and group comparisons of the MR-imaging parameters between baseline and follow-up.

		Baseline	Follow-up
Hippocampal volume	R	1363 (1272–1785)	1264 (1108–1456)**
	L	1376 (1255–1731)	1252 (1086–1440)**
White matter lesions		125 (0–1636)	1026 (0–2781)
Cerebral arteries:
Basilar		3.1 (1.6–4.4)ᵃ	3.1 (2.2–4.5)
Posterior	R	2 (1.2–3.2)ᵃ	2 (0.8–2.8)
	L	2 (0.8–2.6)ᵃ	2.2 (0.8–2.6)
Carotid	R	2.6 (1.6–3.6)ᵃ	2.7 (2–3.6)
	L	2.6 (1.8–3.4)ᵃ	2.9 (1.2–3.4)
Middle	R	2.4 (1.2–2.8)ᵃ	2.4 (2.2.–2.8)
	L	2.2 (1.6–2.8)ᵃ	2.2 (2–2.6)
Anterior	R	1.8 (0.6–2.4)ᵃ	1.8 (1.2–2.6)ᵃ
	L	1.8 (1–2.6)ᵃ	1.8 (1.2–2.4)

Values represent medians and ranges in mm³ (hippocampal volume and white matter lesions) and mm diameter (arteries); group comparisons are controlled for gender; R = Right; L = Left.

**significant at a <.01 level.

ᵃ n = 12.