Table 1. Gender, age groups, trial phases, funding, type of studies.

Gender		Published Studies(N = 19)	Unpublished Studies(N = 14)	Total(N = 33)
Gender
	Male
	Female	1		1
	Both	18	14	32
Age groups
	Child	4	1	5
	Child/Adult	1	3	4
	Child/Adult/Senior	14	10	24
Funding
	Industry	5	5	10
	Industry/Other	1	1	2
	NIH	4	2	6
	Other	7	6	13
	Other/industry	1		1
	Other/NIH	1		1
	U.S. Fed/NIH
Phases
	Phase 0
	Phase 1	1	1	2
	Phase 1 /Phase 2
	Phase 2	2		2
	Phase 2/Phase 3
	Phase 3	4	1	5
	Phase 4	3	2	5
Study Type
	Interventional	10	8	18
	Observational	9	6	15
	Randomized	7	3	10
	Non-randomized	12	11	23