Table 3

Frequency (SD) and mean volumes (cm3, SD) of infarcts on MRI in patients without and with cognitive decline prestroke in the Helsinki Stroke Aging Memory Study (SAM) Cohort (n=337)

Old infarctsSilent infarctsAll
No cognitive decline prestroke (n=306)Cognitive decline prestroke (n=31)No cognitive decline prestroke (n=306)Cognitive decline prestroke (n=31)No cognitive decline prestroke (n=306)Cognitive decline prestroke (n=31)
Frequency of infarcts:
Right side0.2 (0.9)0.5 (1.0)0.8 (1.2)0.8 (1.0)1.5 (0.1)1.5 (0.3)
p=0.0743p=0.8798p=0.6690
 Left side0.3 (1.0)0.2 (0.6)0.7 (1.0)0.7 (0.9)1.4 (1.4)1.3 (1.9)
p=0.6403p=0.8008p=0.2248
 All0.6 (1.4)0.8 (1.1)1.5 (1.8)1.5 (1.5)3.0 (2.4)3.2 (2.0)
p=0.4100p=0.9608p=0.5795
Volume of infarcts:
 Right side20.4 (33.5)17.8 (37.7)2.8 (6.7)4.9 (8.4)22.8 (38.5)32.6 (51.3)
p=0.8405p=0.2731p=0.2426
 Left side10.6 (21.8)2.6 (2.3)3.5 (9.4)0.8 (1.5)11.4 (21.3)10.6 (26.4)
p=0.4250p=0.2711p=0.8813
 All17.2 (29.8)14.4 (32.7)4.5 (10.2)4.0 (7.3)26.5 (39.4)36.7 (50.7)
p=0.7714p=0.8235p=0.2049