Table 1 Types of data extracted from the project documentation

• Study design

• Disease/condition studied

• Study population

• SPCR funding round

• Presence of a section dedicated to PPI within the document

• Presence of PPI in the development of the grant application (including a description of the type and number of public members involved)

• Description of plans for PPI (including a description of the type and number of public members involved)

• Details of PPI activities conducted

• Explanation for any lack of PPI

• References to a specific budget for PPI

• References to rewards and recognition for involvement.

• Level of consistency between planned and reported PPI activities was noted (including explanations for any discrepancies).