Table 8. Overview of the synthesised findings: Process.

Planning	Which risk factors to use?	“The approach needed to invite potential eligible women remained unclear to respondents (14 out of 15); however, they proposed solutions based on available recognized BC risk factors that can be easily collected to pre-select women to be invited. The most recurrent of these were family history, breast density, and age.” [35]
Engaging	The role of external change agents	“HCPs explained that media output can ‘make or break’ public opinion, especially when communication focuses on changes to NHS services.” [36]
Executing	Necessary infrastructure for implementation	“This was always viewed as a serious risk given that current infrastructure was referred to as outdated; care should be taken to develop capable IT and administrative systems flexible enough to cope during delivery.” [34]
Reflecting & evaluating		“Should a risk-stratified approach be implemented, all participants discussed the need for monitoring procedures to ensure women are invited at the right time and allocated to correct pathways.” [34]

BC- breast cancer

EMR–electronic medical records

HCP–healthcare provider/healthcare professional

IT–information technology

NHS–National Health Service

Quotes in italics represent those from HCPs. Quotes that are not in italics represent those of the author.

HCPs roles have been included where available in the original paper.