Table 1 Characteristics of respondents of the questionnaires in the three study groups
From: A trial of consent procedures for future research with clinically derived biological samples
One-time consent study group ( n =56) | Opt-out plus study group ( n =68) | Control study group ( n =115) | All respondents ( n =239) | Non response ( n =38) | |
|---|---|---|---|---|---|
Age (at time of study) *P-value=0.14 | |||||
<50 years | 11 (20%) | 9 (13%) | 30 (26%) | 50 (21%) | 12 (32%) |
50–64 years | 29 (52%) | 40 (59%) | 65 (57%) | 134 (56%) | 16 (42%) |
65–75 years | 16 (29%) | 19 (28%) | 20 (17%) | 55 (23%) | 10 (26%) |
Sex *P-value=0.01 | |||||
Female | 28 (50%) | 29 (43%) | 74 (64%) | 131 (55%) | 18 (47%) |
Male | 28 (50%) | 39 (57%) | 41 (36%) | 108 (45%) | 20 (53%) |
Cancer diagnosis *P-value=0.06 | |||||
Breast cancer | 21 (38%) | 20 (29%) | 57 (50%) | 98 (41%) | 15 (40%) |
Prostate cancer | 18 (32%) | 27 (40%) | 26 (23%) | 71 (30%) | 10 (26%) |
Colorectal cancer (female) | 7 (12%) | 9 (13%) | 17 (15%) | 33 (14%) | 4 (10%) |
Colorectal cancer (male) | 10 (18%) | 12 (18%) | 15 (13%) | 37 (15%) | 9 (24%) |
Educational level (a) *P-value=0.28 | |||||
Low | 13 (23%) | 7 (10%) | 20 (17%) | 40 (17%) | NA |
Intermediate | 21 (38%) | 36 (53%) | 56 (49%) | 113 (47%) | NA |
High | 22 (39%) | 25 (37%) | 39 (34%) | 86 (36%) | NA |
