Table 1.

Characteristics of the investigated restart strategies.

Restart strategy	Population affected	Duration of effects	Changes in stopping age
No catch-up	Population due for a screening appointment during the disruption	Only effects during the disruption	No changes in stopping age were needed
Everyone delay	Total population	The delay will exist forever	Individuals exceeding the original stopping age due to the delay missed their last invitation
First rounds no delay	Total population except individuals who reach the first screening age after 2020	All individuals eligible for screening in or before 2020 are delayed for all screening rounds	Individuals exceeding the original stopping age due to the delay missed their last invitation
Continue after stopping age	Total population	The delay will exist forever	The stopping age increased with the duration of the disruption
Catch-up after stop	Population due for a screening appointment during the disruption	The delay is caught up in the second half of 2020	The stopping age increased with the duration of the disruption for the individuals who were invited for their last round in 2020