Table 2.

Estimated mean number of microbleeds based on main analysis and several sensitivity analyses looking at how three atypical AD subjects with a large number of microbleeds affect the results.

	Total	Frontal	Temporal	Parietal	Occipital
DAT	1.0 (0.4, 2.4)	0.1 (0.0, 0.4)	0.2 (0.1, 0.4)	0.3 (0.1, 0.7)	0.2 (0.1, 0.7)
Atypical AD
All subjects	8.0 (3.9, 17)***	4.5 (1.7, 12)***	1.2 (0.5, 3.0)**	1.4 (0.6, 3.5)*	0.5 (0.2, 1.5)
Omitting three outliers	1.5 (0.8, 2.9)	0.7 (0.2, 1.8)*	0.3 (0.1, 0.8)	0.3 (0.1, 0.6)	0.1 (0.0, 0.3)
Omitting two outliers	3.1 (1.6, 6.1)*	1.5 (0.5, 5.1)**	0.5 (0.2, 1.4)	0.6 (0.2, 1.6)	0.2 (0.1, 0.5)
Giving outliers the highest value among non-outliers	2.7 (1.5, 5.0)*	1.3 (0.6, 2.8)**	0.5 (0.3, 1.1)	0.4 (0.2, 0.8)	0.2 (0.1, 0.4)

^*P < 0.05;

^**P < 0.01;

^***P <0.001 versus Dementia of the Alzheimer’s Type (DAT)