Table 1.

Characteristics of participants in a survey of primary care providers

	na	%
Ever referred patients to clinical trials
No	31	46.3
Yes	36	53.7
Number of patients referred in last three yearsb
5 or fewer	26	72.2
6–25	9	25.0
Over 25	1	2.8
Clinic participates in trials
Yes	33	49.3
No	6	9.0
Not sure	28	41.8
Experience as a clinical trial investigator (principal investigator or co-investigator)
Yes	17	25.4
No	50	74.6
Years in practicec	13	(5, 20)
Provider type
Physician	56	83.6
Advanced practice provider	10	14.9
Other	1	1.5
Board certificationd,e
Family medicine	33	49.3
Internal medicine	22	32.8
Pediatrics	8	11.9
Other	2	3.0
Age
Under 40	20	29.9
40–49	25	37.3
50–59	13	19.4
60 or older	9	13.4
Gender
Female	39	58.2
Male	28	41.8

^a) Total n = 67. There was no missing data for any demographic variables presented

^b) Question was only asked of individuals reporting ever referring a patient to a clinical trial

^c) Summarized as median (25th, 75th percentile)

^d) Question was select all that apply, counts may not sum to total number of participants

^e) Only asked of participants reporting a MD or DO degree