Table 2 Characteristics of the interviewed medical assistants (n = 15)

Gender (female)

n = 14 (93%)

Practice located in an urban area (> 100.000 inhabitants)

n = 2 (13%)

Working in a joint practice

n = 6 (40%)

Prior experience with clinical research (before both cluster-randomized pilot studies)

n = 3 (20%)

Number of years in the profession

18 years (mean)