TABLE 5.

Effect of Amyloid on Longitudinal Awareness Within Each Diagnostic Group

	Estimate	SE	df	t	P
CN
Intercept	0.63	0.33	1,457	1.91	0.06a
Baseline age	−0.007	0.004	1,457	−1.65	0.10
Baseline Aβ	0.16	0.15	1,457	1.11	0.27
Time	0.26	0.12	1,457	2.10	0.04a
Baseline age:time	−0.002	0.001	1,457	−1.24	0.22
Baseline Aβ:time	−0.12	0.05	1,457	−2.36	0.02a
MCI
Intercept	1.93	0.36	2,792	5.36	<0.001b
Baseline age	−0.01	0.005	2,792	−2.99	0.003a
Baseline Aβ	−0.73	0.16	2,792	−4.65	<0.001b
Time	0.46	0.11	2,792	4.25	<0.001b
Baseline age:time	−0.002	0.001	2,792	−1.70	0.09
Baseline Aβ:time	−0.30	0.05	2,792	−6.03	<0.001b
Dementia
Intercept	−0.48	1.05	295	−0.46	0.65
Baseline age	−0.01	0.01	295	−1.03	0.30
Baseline Aβ	0.07	0.36	295	0.20	0.84
Time	0.41	0.59	295	0.69	0.49
Baseline age:time	0.002	0.007	295	0.30	0.76
Baseline Aβ:time	−0.57	0.19	295	−3.06	0.002a

^ap < 0.05.

^bp < 0.001.

Aβ = beta-amyloid; CN = clinically normal; MCI = mild cognitive impairment; SE = standard error.