Table 2. The ADAS-Modified and the augmented ADAS-Cog models evaluated in the training sample. All models include the 13 items in the ADAS-Modified.

Model	Trails A & B	Vegetables	Digit Symbol	Digit span backwardsa	FAQ
					Remember	Forms	Finance	Event	Game	Changeb
ADAS- Modified										6.95
Including FAQ items
1	x	x	X	x	x					8.34
2	x	x	X		x	x	x	x	x	8.90
No FAQ items
3	x	x	X	x						7.62
4	x	x	X							7.67
5	x		X							7.24
6	x	x								7.28
7	x									7.25
8		x	X							7.80
9		x								7.88
10			X							7.42

^aDigit span forwards was tested in all the models containing digit span backwards, but decreased model fit and so was not included

^bZ-statistics for time, in the training sample, from mixed models controlling for age, education, gender and any APOE-4 alleles