„The distribution for non-response rate shows another interesting pattern: the nine countries/economies on the low end of the distribution, exhibiting the lowest non-response rates overall, are exclusively located in East and Southeast Asia. Nonresponse rate as a measure of disengagement would thus lead to conclude that students in these countries/economies are, on average, more engaged when working on the questionnaire.“
Dr. Janine Buchholz u. a., Developing measures of engagement in PISA (2022), S. 19.