Table 3.
Comparison between the United States and China in attributes levels utility and odds ratios.
| Attributes | Variable | Coefficient | Std. Error | OR | 95% CI | p-Value | Coefficient | Std. Error | OR | 95% CI | p-Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| United States (n = 1240) | China (n = 1240) | ||||||||||
| Varieties | mRNA | Reference | |||||||||
| Adenovirus vector vaccines | 0.006 | 0.019 | 0.940 | (0.906–0.976) | 0.761 | −0.105 | 0.018 | 0.922 | (0.890–0.954) | <0.001 | |
| Inactivated vaccine | −0.073 | 0.019 | 0.869 | (0.837–0.902) | <0.001 | 0.128 | 0.018 | 1.164 | (1.124–1.205) | <0.001 | |
| Adverse effect | very mild | Reference | |||||||||
| mild | 0.070 | 0.019 | 1.013 | (0.976–1.051) | <0.001 | 0.077 | 0.018 | 0.879 | (0.849–0.910) | <0.001 | |
| moderate | −0.128 | 0.019 | 0.831 | (0.800–0.863) | <0.001 | −0.284 | 0.018 | 0.612 | (0.591–0.635) | <0.001 | |
| Efficacy | 55% | Reference | |||||||||
| 65% | −0.516 | 0.028 | 1.213 | (1.147–1.282) | <0.001 | −0.246 | 0.025 | 1.088 | (1.036–1.144) | <0.001 | |
| 75% | 0.061 | 0.029 | 2.158 | (2.038–2.285) | 0.038 | 0.048 | 0.028 | 1.461 | (1.384–1.543) | 0.084 | |
| 85% | 0.438 | 0.025 | 3.146 | (2.994–3.306) | <0.001 | 0.204 | 0.024 | 1.707 | (1.627–1.791) | <0.001 | |
| 95% | 0.726 | 0.027 | 4.196 | (3.980–4.424) | <0.001 | 0.326 | 0.026 | 1.928 | (1.832–2.030) | <0.001 | |
| Time for the vaccine to start working | 5 days | Reference | |||||||||
| 10 days | −0.035 | 0.024 | 0.904 | (0.863–0.948) | 0.142 | 0.021 | 0.022 | 1.025 | (0.982–1.069) | 0.324 | |
| 15 days | 0.017 | 0.023 | 0.953 | (0.912–0.996) | 0.445 | −0.027 | 0.022 | 0.976 | (0.936–1.019) | 0.217 | |
| 20 days | −0.048 | 0.025 | 0.893 | (0.849–0.938) | 0.060 | 0.008 | 0.024 | 1.011 | (0.965–1.059) | 0.732 | |
| The duration of vaccine effectiveness | 5 months | Reference | |||||||||
| 10 months | −0.081 | 0.024 | 1.148 | (1.096–1.202) | <0.001 | −0.021 | 0.022 | 1.153 | (1.105–1.204) | 0.338 | |
| 15 months | 0.131 | 0.024 | 1.419 | (1.354–1.487) | <0.001 | 0.048 | 0.023 | 1.236 | (1.182–1.292) | 0.035 | |
| 20 months | 0.169 | 0.023 | 1.475 | (1.410–1.543) | <0.001 | 0.136 | 0.022 | 1.350 | (1.293–1.409) | <0.001 | |
| The cost of vaccination | $0 | Reference | |||||||||
| $50 | 0.179 | 0.026 | 0.674 | (0.640–0.709) | <0.001 | 0.162 | 0.025 | 0.776 | (0.740–0.814) | <0.001 | |
| $100 | −0.111 | 0.026 | 0.504 | (0.479–0.530) | <0.001 | −0.029 | 0.024 | 0.641 | (0.612–0.672) | 0.225 | |
| $150 | −0.263 | 0.029 | 0.433 | (0.409–0.458) | <0.001 | −0.200 | 0.027 | 0.540 | (0.513–0.570) | <0.001 | |
| $200 | −0.381 | 0.031 | 0.385 | (0.362–0.409) | <0.001 | −0.349 | 0.029 | 0.466 | (0.440–0.493) | <0.001 | |