Table 4.

Relationship of Current Smoking and Time of Follow-up to Memory Performance in Elderly Persons Over 5 years of Follow-up Stratified by Age Group.

	Model 1		Model 2
Variable	Estimated ß (SE)	p-value	Estimated ß (SE)	p-value
Persons ≤ 75 years old
Time	-5.9 (0.6)	0.001*	-5.8 (0.6)	0.001*
Current Smoking	-1.0 (5.8)	0.8	-3.6 (5.8)	0.9
Time*current smoking	-1.2 (1.6)	0.4	-1.1 (1.6)	0.5
Persons > 75 years old
Time	-7.7 (0.6)	0.002*	-7.9 (0.7)	0.002*
Current Smoking	-1.8 (1.2)	0.1	-3.9 (6.6)	0.5
Time*current smoking	-0.7 (0.3)	0.05*	-4.0 (1.8)	0.02*

Model 1 is adjusted for age and gender, Model 2 is adjusted for age, gender, education, ethnic group and APOEε4, hypertension, heart disease and diabetes

^*significant at a 0.05 level