Using an App to collect detailed expenditure data in a probability household panel survey: response rates, response biases and measurement quality
[…] proportion had said they were hypothetically willing to participate in such a task? What proportion actually downloaded the App? How did participation evolve over the month? What impact did the conditional incentive for downloading the App have? Secondly we will examine biases in the types of sample members who participated, considering social-demographic characteristics, financial […]