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. Author manuscript; available in PMC: 2020 May 10.
Published in final edited form as: Clin Trials. 2020 Feb 3;17(2):184–194. doi: 10.1177/1740774520901514

Table 1.

Structural barriers encountered by physicians and staff enrolling cancer patients onto clinical trials (n = 120), September - November 2017.

Total
N = 120
Physicians
N = 47
Staff
N = 73
P value
N (%) N (%) N (%)
Administrative
 Paperwork is very complicated 55 (54.5) 26 (57.8) 29 (51.5) 0.55
 Lack of support staff to assist with enrollment 47 (45.6) 24 (52.2) 23 (40.4) 0.23
 Enrollment process is too time consuming 48 (49.0) 26 (56.5) 22 (42.3) 0.16
 Difficult to keep track of the eligibility criteria 74 (73.3) 38 (84.4) 36 (64.3) 0.02
Patient-related
 Patients frequently miss scheduled
Appointments
35 (35.7) 14 (32.6) 21 (38.2) 0.56
 Patients refuse placebo 43 (51.8) 20 (50.0) 23 (53.5) 0.75
 Interacting with the patient’s family 30 (31.9) 8 (18.2) 22 (44.0) 0.007
 Minority patients are difficult to enroll 28 (30.8) 12 (28.6) 16 (32.7) 0.67
Process-related
 Very few eligible patients 45 (46.9) 22 (51.2) 23 (43.4) 0.45
 Clinical trial protocols are too rigid 36 (35.0) 16 (34.8) 20 (35.1) 0.97
 Too difficult to match patients to trials 24 (28.2) 13 (31.7) 11 (25.0) 0.49
 Lack of minority physicians to recruit minority patients 40 (43.0) 20 (45.5) 20 (40.8) 0.65
 Making time to discuss clinical trials with patients during office visits 47 (50.5) 31 (67.4) 16 (34.0) 0.001
 Translating documents into Spanish and other languages is difficult and expensive 42 (44.7) 21 (48.8) 21 (41.2) 0.46
 Communicating complex information to patients is very difficult 56 (57.1) 26 (56.5) 30 (57.7) 0.91
 No space to enroll and consent patients 30 (30.6) 13 (28.3) 17 (32.7) 0.63
 Heavy clinical patient volume 32 (35.6) 20 (44.4) 12 (26.7) 0.08