Table 3.

Final multivariable linear regression model showing factors associated with the willingness-to-pay for a COVID-19 vaccine in Indonesia (n = 1,065)

Variables	Unstandardized coefficients				US-$ estimate			P-value
	B	95% CI of B		SE	Mean	95% CI
		Lower	Upper			Lower	Upper
Intercept	3.524	3.349	3.700	0.089	45.963	44.434	47.491	<0.001
Occupation (Civil servant)
Private sector employee	−0.229	−0.371	−0.087	0.072	1.077	−0.451	2.606	0.002
Entrepreneur	−0.135	−0.315	0.045	0.092	1.184	−0.345	2.712	0.142
Student	0.069	−0.107	0.244	0.089	1.451	−0.078	2.979	0.444
Retired	−0.185	−0.640	0.271	0.232	1.126	−0.402	2.655	0.427
Medical staff (No)
Yes	0.183	0.054	0.312	0.066	1.627	0.098	3.155	0.005
Religion (Islam)
Buddhism	−0.031	−0.287	0.225	0.131	1.313	−0.215	2.842	0.813
Cristian	0.198	−0.061	0.456	0.132	1.651	0.122	3.179	0.134
Catholic	0.432	0.104	0.760	0.167	2.087	0.558	3.615	0.010
Others	0.397	−0.120	0.915	0.264	2.015	0.487	3.544	0.132
Monthly income, Indonesian Rupiah (<2.5 millions)
2.5–5 million	0.311	0.176	0.445	0.069	1.848	0.320	3.377	<0.001
6–10 million	0.397	0.226	0.568	0.087	2.015	0.486	3.543	<0.001
>10 million	0.734	0.527	0.941	0.105	2.822	1.293	4.350	<0.001
Perceived risk to be infected with COVID-19 (0)
10–20	−0.102	−0.221	0.018	0.061	1.224	−0.305	2.752	0.096
30–40	−0.028	−0.174	0.118	0.075	1.317	−0.211	2.846	0.706
50–60	0.054	−0.083	0.191	0.070	1.429	−0.099	2.958	0.442
> 60	0.306	0.047	0.566	0.132	1.840	0.311	3.368	0.021
MSE	0.607
F-value (P < .001)	4.574
R2	0.103