Table 3.

Example question

Former version	Recommended version
1. Did you have symptoms for which you did not contact your GP or medical specialist because of the COVID-19 pandemic? • No • Yes	1. Did you have symptoms for which you did not contact your GP or medical specialist since (date)? • I did not have any symptoms (continue to question 5) • I had symptoms, but I contacted my GP or medical specialist for them (continue to question 4) • I had symptoms for which I did not contact my GP or medical specialist (continue to question 2)
	2. Which symptoms did you have since (date) for which you did not contact your GP or medical specialist?
	• List with pre-specified symptoms, and a free-text option
	3. What was the most important reason for not contacting your GP or medical specialist?
	• Fear of becoming infected with COVID-19 • Fear of burdening my healthcare provider • I did not expect to get access to care (for example, I thought there would not be a hospital bed for me) • Financial reasons • Other… (free-text)
	4. Did your symptoms, to your own insight, require direct medical attention?
	• None of my symptoms required direct medical attention • At least one of my symptoms required direct medical attention, and I also received that • At least one of my symptoms required direct medical attention, but I did not (directly) receive that. I experienced this once or twice • At least one of my symptoms required direct medical attention, but I did not (directly) receive that. I experienced this 3, 4 or 5 times • At least one of my symptoms required direct medical attention, but I did not (directly) receive that. I experienced this 6 or more times