Table 1.

Translated list of relevant questionnaire items with response format

Variable	Item Response format
Research question 1
Pleasantness of reactions	‘If there were reactions, how did you perceive them?’ 1–5: very unpleasant, rather unpleasant, neutral, rather pleasant, very pleasant
Descriptive norm	‘What percentage of German physicians do you estimate consented to disclose in the database?’ ___ % (open format in per cent)
Attitude	‘To what extent do you agree with the following statement: In principle, I approve of transparency.’ 1–5: strongly disagree, disagree, neutral, agree, strongly agree
Research question 2
Frequency of reactions	‘How many reactions did you get from patients / colleagues / your private environment?’ 1–5: none, very few, rather few, rather many, many
Research question 3
Content of reactions	‘If there were reactions, how was their content?’ 1–5: very negative, somewhat negative, neutral, somewhat positive, very positive

Note. The original questionnaire was in German; the translated complete questionnaire can be found in online supplemental file A.