Frauke Kreuter
What surveys really say

Nature: International Weekly Journal of Science, 2021: 600, issue 7890, pp. 614-615
ISSN: 0028-0836 (print) , 1476-4687 (online)

Increasing the sample size of a survey is often thought to increase the accuracy of the results. However, an analysis of big surveys on the uptake of COVID-19 vaccines shows that larger sample sizes do not protect against bias.