Table 5.

The β-amyloid phase reported by 26 observers when following the original instructions and while assessing 10 selected brain blocks

Number of cases	β-amyloid phase (Thal et al. 2002) Absolute agreement in percent
	Reference phase	0	1	2	3	4	5	All phases
3	1	2	86	4	2		6	84
	2
8	3		1	1	81	11	6
8	4				15	74	11
14	5				2	8	90

The absolute agreement between 26 observers and the reference group is given in bold