Table 5. Logistic regression analysis of association between PDT scoring and AD.

A. Estimates of logistic regression model with AD as the dependent variable and age, PDT and interaction between PDT and education as independent variables.
Effect	Estimate	SE	z value	p	OR
Intercept	2.91	1.66	1.75	0.08
Age	0.06	0.02	3.43	0.00	-
PDT	-1.21	0.19	-6.32	0.00	-
PDT+Education group 1* #	-0.09	0.06	-1.44	0.15	-
PDT+Education group 2* ¶	0.01	0.05	0.15	0.88	-
B. Estimates of logistic regression model with diagnosis of AD as the dependent variable and age, PDT and education as independent variables.
Effect	Estimate	SE	z value	p	OR
Intercept	3.04	1.67	1.82	0.07	-
Age	0.06	0.02	3.45	0.00	1.06
PDT	-1.24	0.19	-6.52	0.00	0.29
Education group 1	-0.51	0.34	-1.49	0.14	0.60
Education group 2 ¶	0.09	0.30	0.29	0.77	1.09

PDT: Pentagon Drawing Test; AD: Alzheimer's disease; SE: standard error; OR: odds ratio;

^#group with 5-8 years of education;

^¶group with >8 years of education;

^*interaction analysis between PDT and education.