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. Author manuscript; available in PMC: 2020 Jul 5.
Published in final edited form as: J Cancer Educ. 2020 Apr;35(2):292–300. doi: 10.1007/s13187-018-1464-z

Table 3.

Mean correct items assessing knowledge of informed consent information by area of knowledge and by majority vs. minority racial groups.

Main Analysis Non-minority Racial minority
n Mean SD n Mean SD Difference
in means		 95% CI
All questionsc 592 11.01 3.19 58 10.38 3.32 0.63 −0.52–1.78
Specimen handlingc 592 7.69 1.84 58 7.42 2.10 0.28 −0.24–0.81
Specimen sharingc 592 2.37 1.45 58 2.22 1.57 0.20 −0.21–0.61
Relevance-to-carec 592 1.70 1.24 58 1.19 1.21 0.48 0.13–0.80a
Matched Analysis
Specimen handlingc 58 7.31 0.27 58 7.38 0.27 −0.07 −0.83–0.69
Specimen sharingc 58 2.45 0.20 58 2.31 0.20 0.15 −0.42–0.72
Relevance-to-carec 58 1.58 0.16 58 1.09 0.16 0.48 0.02–0.94b
a

Significant at p<0.001, adjusted for age, education, clinical condition, marital status, reading level, and baseline cognitive function.

b

Significant at p<0.05, adjusted for age, education, clinical condition, marital status, reading level, and baseline cognitive function.

c

Score ranges are: all questions 0-16; specimen use between 0-9; specimen sharing between 0-4; and relevance 0-3, where a higher number indicates higher score.