Table 2 Categorization of D&I expertise level

Beginner

• Self-rated their experience as  beginner and had five years or less of experience OR

• Self-rated their experience as intermediate and had less than 2 years of experience

Intermediate

• Self-rated their experience as intermediate and had 2–10 years of experience OR

• Self-rated their experience as advanced and had 2–5 years experience

Advanced

• Self-rated their experience as advanced and had 6–15 years of experience OR 

• Self-rated their experience as intermediate and had 11 or more years of experience

Expert

• Self-rating their experience as advanced and had more than 15 years of experience in D&I research