Table 3.

Summary statistics regarding numbers of participants by funding source

Parameter	Public	Private	Combined	Total
Number of trials (N)	19	289	36	344
Number of participants
≥100,000	0	2	0	2
30,000-99,999	1	4	1	6
10,000-29,999	1	38	3	42
3,000-9,999	6	51	11	68
1,000-2,999	6	88	11	105
< 999	5	106	10	121
Mean	4,696	5,944	4,703	5,745
Standard deviation	8,877	21,485	7,299	19,934
Median	2,331	1,400	2,450	1,555
Max	39,876	300,000	40,000	300,000