Feedback on clinical team performance: how does it work, in what contexts, for whom, and for what changes? A critical realist qualitative multiple case study

Table 2 Distribution of data sources by case

Data type	1st case	2nd case	3rd case	Actors and documents across cases	Total
Observation	18.75 h	70 h	31.75 h	NA^a	120.5 h
Individual interviews	2	5	11	8	26
Focus groups	1	2	1	NA^a	4
Documents	6	48	24	4	82
Questionnaires	9	3	3	NA^a	15

ISSN: 1472-6963