Table 3.

Evaluation of barriers relating to domains (percentage of participants confirming the presence of barrier)

	Implementation	Inner setting
Personal assessment of the importance, significance, and topicality (of the project/topic)	26	26
Time resource	61	65
Personnel changes in the team (number of hours, sick leave, short contracts, lack of replacements during maternity/paternity leave, third-party funding…)	35	47
Restaffing during maternity/parental leave, third-party funding…)	10*	16
Study-specific organization (ethics, consent forms, data acquisition and transfer)	23	40
Scientific know-how (ethics applications, consent forms, data protection, …)	19	21
Duration and scope of the individual subject booklets	23	26
Clinic-specific framework conditions (position at the clinic, …)	29	26
Pandemic and other daily crises	23	20

Values with ‘*’ are below the 14th percentile, values with ‘**’ above the 84^th