Table 4.

Three-Way Interaction Effect of ApoE Genotype on Model of Cognitive Decline

Test	Phase 1			Phase 2
	Coefficient	SE	P value	Coefficient	SE	P value
SDMT	0.081	0.270	0.763	0.096	0.197	0.628
SRT-Total∗	−0.362	0.268	0.183	−0.216	0.167	0.198
SRT-Delayed	−0.134	0.084	0.113	−0.098	0.048	0.042
New Dot Test	−0.038	0.046	0.405	−0.019	0.030	0.533

^∗Controlling for age, sex, education, baseline UPDRS, baseline test score, length of exposure to deprenyl, and exposure to tocopherol.