Table 1.

Study phase over time, based on year of publication (N=22 studies).

Yeara	Design and development, n (%)	Feasibility and acceptability, n (%)	Effectiveness and efficacy, n (%)
2008	N/Ab	1 (4)	N/A
2009	N/A	N/A	N/A
2010	N/A	N/A	N/A
2011	N/A	N/A	N/A
2012	N/A	N/A	N/A
2013	1 (4)	1 (4)	1 (4)
2014	1 (4)	2 (9)	N/A
2015	1 (4)	1 (4)	N/A
2016	N/A	N/A	N/A
2017	N/A	2 (9)	1 (4)
2018	2 (9)	5 (23)	4 (18)
2019	N/A	4 (18)	4 (18)

^aNote that multiple study phases are reported for some studies.

^bNot applicable.