Table 5. Univariate Logistic regression analysis

Variable	General knowledge		Preventive knowledge		Attitudes		Behaviors
	OR (95%CIs)	P-value	OR (95%CIs)	P-value	OR (95%CIs)	P-value	OR (95%CIs)	P-value
Gender
Female	1.13 (0.821-54)	0.432	1.65 (1.23-2.21)	0.001	0.99 (0.621-58)	0.971	1.90 (1.34-2.69)	<0.001
Male	1		1		1		1
Age groups
≥65 years	0.72 (0.192-66)	0.628	5.55 (1.5120-35)	0.010	//	//	1,58 (0.48-5.19)	0.451
<65 years	1		1		//	//	1
Occupation
Civil servant	1.92 (1.402-64)	<0.001	1.27 (0.94-1.71)	0.112	0.84 (0.521-35)	0.474	1.91 (1.35-2.70)	<0.001
Others	1		1		1		1
Monthly income
≥ 10 million VND	1.39 (1.011-90)	0.038	0.70 (0.52-0.95)	0.022	1.10 (0.681-76)	0.683	0.84 (0.59-1.19)	0.335
<10 million VND	1		1		1		1
Hometown
HCMC	1.08 (0.751-57)	0.662	1.54 (1.08-2.20)	0.016	0.94 (0.541-65)	0.854	4.38 (2.46-7.78)	<0.001
Other provinces	1		1		1		1
Living status
With family, friends	1.21 (0.881-66)	0.221	1.62 (1.20-2.18)	0.001	0.82 (0.511-32)	.428	3.89 (2.63-5.74)	<0.0001
Alone	1		1		1		1
Current morbidities
Risky	1.28 (0.931-75)	0.123	1.50 (1.11-2.02)	0.007	1.22 (0.751-98)	0.421	1.81 (1.28-2.55)	0.001
No risky	1		1		1
History isolation
Isolated	1.51	0.192	5.53 (2.7511-10)	<0.001	5.26 (0.7138-78)	0.103	8.35 (4.3715-96)	<0.001
Non-isolated	1		1		1		1
General knowledge
Good							1.41 (0.98-2.03)	0.063
Not good							1
Preventive knowledge
Good							2.15 (1.52-3.04)	<0.001
Not good							1
Attitude
Good							1.81 (0.93-3.52)	0.076
Not good							1