Change in recruitment materials
RECRUITMENT
We were unable to assess the impact of all the changes to recruitment strategy as these were also affected by changing from Phase 1 to Phase 2 and several COVID-19 related changes. This included decreeing that all women wishing to have screening mammography book their own appointments. As BC-Predict was predicated on the timing of the mammogram, only those booking appointments were approached in Phase 2. However, a significant amendment was instituted at the end of March 2021 which included: amendments to the consent form and participant information sheet in order to improve uptake to BC-Predict by highlighting that a paper consent form was available and adapting the participant information sheet to reflect recommended changes made by a patient involvement group and patient representative-(FH). Other substantial changes were made to increase recruitment uptake, such as inviting women from previous studies (PROCAS-1) in order to obtain an updated risk score. These changes appeared to further increase uptake from around 16% overall to 18% (Supplementary Table 