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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Clin Trials. 2017 Jul 11;14(5):518–525. doi: 10.1177/1740774517717722

Table 2.

Cancer Clinical Trials Knowledge Items (n=127)

Fall Sample (n = 127) Race (n = 125) Ethnicity1
Correct Answer Correct N (%) White (n = 55) African-American (n = 15) Asian (n = 34) Mixed Race (n = 7) Other Race (n = 14) Latino (n = 19) Non-Latino (n = 106)
In a cancer treatment trial, patients will receive a placebo or the new treatment being tested False 45 (35.4%) 28 (50.9%) 6 (40%) 7 (20.6) 3 (42.9%) 1 (7.1%) 5 (26.3%) 40 (37.7%)
The new approach being tested in a cancer treatment trial is superior to the standard treatment. False 60 (47.2%) 34 (61.8%) 4 (26.7%) 16 (47.1) 3 (42.9%) 3 (21.4%) 8 (42.1%) 52 (49.1%)
About 15% of all U.S. adults with cancer participate in cancer treatment trials. False 11 (8.7%) 5 (9.1%) 1 (6.7%) 2 (5.9) 1 (14.3%) 2 (14.3%) 1 (5.3%) 10 (9.4%)
The rate of U.S. adults who participate in cancer treatment trials is lower among minority groups and the medically underserved. True 88 (69.3%) 38 (69.1%) 14 (93.3) 20 (58.8%) 7 (100%) 7 (50%) 15 (78.9%) 73 (68.9%)
Most cancer patients are told about the option of receiving care through a treatment trial, but they decide not to do so. False 39 (30.7%) 20 (36.4%) 6 (40%) 8 (23.5%) 1 (14.3%) 3 (21.4%) 2 (10.5%) 37 (34.9%)
Cancer treatment trials are best reserved as the last resort for patients who have no other treatment options. False 78 (61.4%) 39 (70.9%) 12 (80%) 17 (50%) 4 (57.1%) 4 (28.6%) 10 (52.6%) 67 (63.2%)
All cancer treatment trials in the U.S. are subject to federal regulations that protect patients' rights and safety. True 115 (90.6%) 48 (87.3%) 15 (100%) 30 (88.2%) 7 (100%) 13 (92.9%) 18 (94.7%) 96 (90.6%)
Total Percent Correct (M, SD) 49% (23) 56% (24) 55% (12) 42% (24) 53% (23) 33% (18) 44% (18) 50% (.24)
1

Two missing data