Daziano Ricardo A
School of Civil and Environmental Engineering, Cornell University, Ithaca, 14853, NY, USA.
Health Econ Rev. 2022 Mar 31;12(1):23. doi: 10.1186/s13561-022-00368-w.
Using choice microdata (N=2723) across the USA, this paper analyzes elicited acceptance of hypothetical COVID-19 vaccines.
The hypothetical vaccines in a choice experiment were described in terms of effectiveness, days for antibodies to develop, duration of protection, risk of both mild and severe side effects, which health agency mainly supports the vaccine, country of origin, and when the vaccine was developed. Out-of-pocket cost was also considered as characteristic of the vaccines to derive welfare measures.
All vaccine attributes had expected signs with significant estimates. Vaccines developed in the USA and the UK were preferred to a hypothetical German vaccine, whereas a Chinese origin was very negatively perceived. Since the choice scenarios also gave the option to opt out from taking the vaccine, odds ratios were derived to characterize the segments that are more and less likely to accept vaccination. More likely to opt out were found to be those who stated to be against vaccination in general, African Americans, individuals without health insurance, and older people. Males, democrats, those who took the flu vaccine appear as more willing to accept vaccination.
Estimates of the fitted choice models in this study are informative for current and future immunization programs.
本文利用美国的选择微观数据（N = 2723），分析了对假设的新冠疫苗的诱导接受度。
在一项选择实验中，假设疫苗依据有效性、抗体产生天数、保护持续时间、轻度和重度副作用风险、主要支持该疫苗的卫生机构、原产国以及疫苗研发时间进行描述。自付费用也被视为疫苗的特征以得出福利措施。
所有疫苗属性都有预期的符号且估计值显著。与假设的德国疫苗相比，美国和英国研发的疫苗更受青睐，而中国原产的疫苗则被负面看待。由于选择情景中也提供了不接种疫苗的选项，因此得出优势比来描述更有可能和不太可能接受疫苗接种的人群。发现那些表示总体上反对接种疫苗的人、非裔美国人、没有医疗保险的人以及老年人更有可能选择不接种。男性、民主党人、接种过流感疫苗的人似乎更愿意接受疫苗接种。
本研究中拟合选择模型的估计值对当前和未来的免疫计划具有参考价值。
