Dissemination and Implementation Research Funded by the US National Institutes of Health, 2005–2012

Table 5

Predominant study designs and methods in the R01 projects.

Rank; (most to fewest)	Predominant study design: 46 RO1 projects	Frequency (%)
1	Quasiexperimental designs	20 (43)
2	Randomized controlled trials	11 (24)
3	Systems science (e.g., social network analysis)	10 (22)
4	Case studies	3 (7)
5	Community-based participatory research	1 (2)
6	Unclear study design	1 (2)
Other categories
	Studies with more than one design	14 (30)
	Studies using mixed methods (quantitative and qualitative)	14 (30)