Table 3.

Analysis of factors affecting Alzheimer’s disease (AD) preventive behaviors.

	Reference	Intention to take AD-preventive medicines	Experience of taking Gingko biloba or similar medicines	AD-preventive lifestyle
		OR (95% CI)	OR (95% CI)	B (95% CI)
Socio-demographic factors
Female	Male	9.08 (0.65-127.78)	0.35 (0.14-0.83)	1.73 (0.14-3.32)
Age in 50-54	45-49	0.16 (0.01-4.83)	1.64 (0.52-5.13)	-0.81 (-3.00-1.38)
Age in 55-59	45-49	0.41 (0.01-24.12)	0.51 (0.15-1.71)	-3.06 (-5.38 - -0.75)
Age in 60-64	45-49	0.78 (0.01-46.85)	0.90 (0.26-3.14)	-1.13 (-3.51-1.24)
Residence: Others	Metropolitan	2.14 (0.20-23.16)	0.75 (0.33-1.71)	0.85 (-0.72-2.42)
Education: ≥university	<high school	6.65 (0.36-121.82)	0.61 (0.24-1.59)	1.05 (-0.76-2.87)
Unmarried	Married	0.02 (0.00-2.02)	1.23 (0.22-6.73)	-3.96 (-7.15 - -0.76)
Monthly income*: ≥3200 USD	< 3200 USD	1.58 (0.15-16.88)	2.07 (0.77-5.55)	0.70 (-1.12-2.51)
Non-demographic factors
Perceived susceptibility	+1 score	1.20 (0.83-1.72)	1.03 (0.90-1.17)	-0.35 (-0.59 - -0.11)
Perceived severity	+1 score	1.02 (0.70-1.49)	1.00 (0.86-1.17)	-0.16 (-0.45-0.13)
Perceived benefits	+1 score	1.06 (0.61-1.84)	1.07 (0.89-1.27)	-0.02 (-0.34-0.31)
Perceived barriers	+1 score	1.07 (0.82-1.39)	1.01 (0.94-1.08)	0.08 (-0.05-0.21)
Self-efficacy	+1 score	1.39 (1.03-1.87)	1.07 (0.98-1.18)	0.18 (0.00-0.36)
Cue to action	+1 score	1.21 (0.73-2.02)	1.22 (1.07-1.40)	0.25 (0.02-0.48)
Knowledge of dementia	+1 score	3.42 (1.13-10.39)	1.06 (0.78-1.44)	0.13 (-0.44-0.70)

^*Income level was converted from Korean Won (KRW) to USD with the 2020 average currency rate of 0.0008 USD. The median household income for 4-person families were 3799.3 USD in 2020.^[26]

AD = Alzheimer’s disease, CI = confidence interval, OR = odds ratio, USD = US Dollar.

OR was derived from a multiple regression analysis; B was derived from a generalized linear regression.