Table 2.

Variables predicting AD in addition to < −1.5 SD on one episodic memory test

		Block by block			Final model
Predictor	Nagelkerke’s R ²	Odds ratio	Confidence interval	P	Odds ratio	Confidence interval	P
Block 1: main predictors	.396
Age		1.000	1.0, 1.0	0.997	0.982	0.9, 1.0	0.454
Education		0.993	0.9, 1.1	0.870	0.994	0.9, 1.1	0.893
Sex		1.028	0.6, 1.7	0.917	1.025	0.6, 1.8	0.935
Mini-mental state exam		0.729	0.6, 0.8	<0.001	0.811	0.7, 1.0	0.010
< −1.5 SD on one test		22.061	7.7, 63.0	<0.001	12.390	4.2, 36.8	<0.001
Block 2: non-memory tests	.425
Category fluency		0.834	0.6, 1.1	0.163	0.854	0.7, 1.1	0.252
Boston naming test		0.937	0.9, 1.0	0.109	0.937	0.9, 1.0	0.127
Trails B/A ratio		1.314	1.0, 1.7	0.033	1.216	0.9, 1.6	0.164
Block 3: biomarkers	.482
Apolipoprotein E ε4							0.036
Apolipoprotein E ε4 (1 allele)					1.767	1.0, 3.2	0.055
Apolipoprotein E ε4 (2 alleles)					2.853	1.2, 7.0	0.021
Total hippocampal volume					0.015	0.0, 1.7	0.081
Brain parenchymal fraction					0.000	0.0, 0.2	0.030
White matter hyperintensity					1.025	0.9, 1.1	0.654
Ventricular cerebrospinal fluid					1.043	0.9, 1.3	0.687