Table 1. Unadjusted relationship between sociodemographic factors and willingness-to-pay for a hypothetical Ebola vaccine (N=288).
| Parameter | N (%) | Unstandardized coefficients | US$ estimate | P-value | |||||
|---|---|---|---|---|---|---|---|---|---|
| B | 95% CI of B | SE | Mean | 95% CI | |||||
| Lower | Upper | Lower | Upper | ||||||
| Intercept | 1.469 | 0.864 | 2.073 | 0.307 | 5.915 | 4.368 | 7.461 | <0.001 | |
| Age group (year) | |||||||||
| 17–29 (Ref) | 68 (23.6) | ||||||||
| 30–44 | 147 (51.0) | -0.304 | -0.556 | -0.052 | 0.128 | 1.005 | -0.542 | 2.551 | 0.018 |
| ≥45 | 73 (25.3) | -0.280 | -0.581 | 0.022 | 0.153 | 1.029 | -0.517 | 2.576 | 0.069 |
| Gender | |||||||||
| Male (Ref) | 137 (47.6) | ||||||||
| Female | 151 (52.4) | 0.110 | -0.126 | 0.346 | 0.120 | 1.520 | -0.027 | 3.066 | 0.359 |
| Education | |||||||||
| Less than junior high school (Ref) | 70 (24.3) | ||||||||
| Senior high school | 136 (47.2) | 0.300 | 0.043 | 0.557 | 0.130 | 1.837 | 0.291 | 3.384 | 0.022 |
| Diploma | 42 (14.6) | 0.042 | -0.372 | 0.456 | 0.210 | 1.420 | -0.127 | 2.966 | 0.842 |
| Graduated | 40 (13.9) | 0.526 | 0.042 | 1.010 | 0.246 | 2.304 | 0.757 | 3.851 | 0.033 |
| Occupation | |||||||||
| Farmer (Ref) | 77 (26.7) | ||||||||
| Private employee | 24 (8.3) | 0.741 | 0.267 | 1.215 | 0.241 | 2.857 | 1.310 | 4.403 | 0.002 |
| Housewife | 67 (23.3) | 0.045 | -0.284 | 0.375 | 0.167 | 1.424 | -0.122 | 2.971 | 0.788 |
| Entrepreneur | 72 (25.0) | 0.400 | 0.106 | 0.694 | 0.149 | 2.032 | 0.485 | 3.578 | 0.008 |
| Civil servant | 48 (16.7) | 0.606 | 0.146 | 1.065 | 0.233 | 2.495 | 0.948 | 4.042 | 0.010 |
| Marital status | |||||||||
| Unmarried (Ref) | 10 (3.5) | ||||||||
| Married | 278 (96.5) | -0.896 | -1.438 | -0.355 | 0.275 | 0.556 | -0.991 | 2.102 | 0.001 |
| Monthly income (IDR) | |||||||||
| <1 million (Ref) | 127 (44.1) | ||||||||
| 1 to ≤ 2 million | 96 (33.3) | -0.107 | -0.336 | 0.123 | 0.117 | 1.224 | -0.323 | 2.770 | 0.360 |
| >2 million | 65 (22.6) | 0.054 | -0.315 | 0.424 | 0.188 | 1.437 | -0.110 | 2.984 | 0.774 |
| Urbanicity | |||||||||
| Suburb (Ref) | 247 (85.8) | ||||||||
| City | 41 (14.2) | -0.491 | -0.842 | -0.141 | 0.178 | 0.833 | -0.714 | 2.379 | 0.006 |
| Socio-economic status | |||||||||
| 1 st tertile (Poorest) (Ref) | 95 (33.0) | ||||||||
| 2 nd tertile | 96 (33.3) | -0.150 | -0.418 | 0.119 | 0.136 | 1.172 | -0.374 | 2.719 | 0.273 |
| 3 rd tertile (Wealthiest) | 97 (33.7) | -0.076 | -0.404 | 0.252 | 0.167 | 1.262 | -0.285 | 2.808 | 0.649 |
| Attitude towards vaccination practice | |||||||||
| Poor (Ref) | 138 (47.9) | ||||||||
| Good | 150 (52.1) | -0.029 | -0.251 | 0.193 | 0.113 | 1.322 | -0.224 | 2.869 | 0.797 |
| Knowledge of Ebola | |||||||||
| Poor (Ref) | 196 (68.1) | ||||||||
| Good | 92 (31.9) | -0.201 | -0.461 | 0.059 | 0.132 | 1.113 | -0.433 | 2.660 | 0.129 |
| Mean squared error (MSE) | 0.617 | ||||||||
| F value | 4.281 (P<0.001) | ||||||||
| R 2 | 0.223 | ||||||||
CI, confidence interval; IDR, Indonesia rupiah; US$, American dollar; SE, standard error; Ref, reference group.