TABLE 4.

Factors Associated With Willingness to Pay for HBV Vaccine and Maximum Amount

Characteristic	Previous HBV vaccination		WTP for HBV vaccine		Amount of WTP for one dose of HBV vaccine
Characteristic	OR	95%CI	OR	95%CI	Coef.	95%CI
Education
≤ Secondary	ref		ref		ref
High	0.99	0.52, 1.88	1.55	0.89, 2.69	6.44^a	1.95, 10.93
Vocational training	1.30	0.66, 2.58	1.51	0.81, 2.81	6.62^a	1.64, 11.61
University	2.29^a	1.16, 4.51	0.89	0.49, 1.62	3.17	-1.65, 7.99
Household monthly income quintiles
Q1	ref		ref		ref
Q2	1.73	0.97, 3.10	0.58^a	0.35, 0.98	–1.14	-5.24, 2.96
Q3	1.87	0.96, 3.65	0.73	0.40, 1.32	0.36	-4.36, 5.08
Q4	1.56	0.78, 3.11	1.08	0.57, 2.05	1.87	-3.05, 6.80
Q5	1.28	0.62, 2.63	0.89	0.46, 1.70	3.93	-1.19, 9.05
Marital status
Having spouse/partner	ref		ref		ref
Other	4.04^a	1.06, 15.5	4.69	0.92, 23.89	12.29^a	1.76, 22.83
Living area
Urban area	ref
Rural area	0.70	0.46, 1.08
Source of general vaccination information
School (Yes vs. No-ref)			0.33^a	0.16, 0.69	-5.00	-11.03, 1.03
Magazine/Newspaper (Yes vs. No-ref)	1.49^a	1.01, 2.20
Listening to radio or loudspeaker (Yes vs. No-ref)			1.46	0.99, 2.16	3.07^a	0.03, 6.11
Internet (Yes vs. No-ref)			1.57^a	1.09, 2.28
Medical staff (Yes vs. No-ref)			1.43^a	1.01, 2.01
Friends and relatives (Yes vs. No-ref)			1.55	0.96, 2.52	3.21	-0.52, 6.94
Ever heard about HBV vaccine
No	ref		ref
Yes	4.54^a	1.33, 15.49	1.65	0.79, 3.44

Abbreviations: Coeff, coefficient; CI, confidence interval; HBV, hepatitis B virus, OR, odds ratio; WTP, willingness to pay.
↵^aP<.05.