Table 4.

Logistic Regression coefficients (β), standardized errors (S.E.), Wald values, significance levels, odds ratios, and odds ratio 95% confidence intervals for standardized incongruent errors plus average z-score values across 6 cognitive domains used to discriminate healthy older adults from very mild DAT individuals.

Predictor Variable	β	S.E.	Wald (z-score)	p-value	Odds Ratio	95% Confidence Lower --- Upper
Memory (5 tasks)	−1.226	.562	4.754*	.029	.294	.098 --- .883
Speed/Switching (3 tasks)	.167	.467	.128	.720	1.182	.473 --- 2.952
Verbal Fluency (2 tasks)	−.085	.516	.027	.869	.919	.334 --- 2.524
Spatial Ability (2 Tasks)	.226	.445	.259	.611	1.254	.524 --- 3.001
Digit Span (2 Tasks)	.125	.369	.115	.734	1.133	.550 --- 2.335
Knowledge (2 Tasks)	.106	.365	.085	.771	1.112	.544 --- 2.275
Incongruent Stroop Errors	1.088	.377	8.334*	.004	2.969	1.418 --- 6.215

Note.

^*p < .05.

^{^}p < .10.