Table 3 Blood consent rates by allocated and actual mode of interview and feedback group
Characteristic: | Full Interview | Asked for DBS Kit | Consent to DBS | Consent to venous blood | Consent to either sample | |
|---|---|---|---|---|---|---|
Modes pooled: | ||||||
Overall | 2162 | 1032 | 1036 (48%) | 1052 (49%) | ||
Non-feedback | 1045 | 499 (48%) | 468 (45%) | 473 (45%) | ||
Feedback | 1117 | 533 (48%) | 568 (51%) | 579 (52%) | ||
t-test of feedback effect (p value) | 0.99 | 0.005 | 0.002 | |||
Allocated Mode: | ||||||
i. Nurse | Non-feedback | 334 | 243 (73%) | 217 (65%) | 248 (74%) | |
Feedback | 375 | 271 (72%) | 256 (68%) | 282 (75%) | ||
ii. Interviewer | Non-feedback | 309 | 238 (77%) | 116 (38%) | - | |
Feedback | 352 | 272 (77%) | 170 (48%) | - | ||
iii. Web | Non-feedback | 402 | 251 (62%) | 109 (27%) | - | |
Feedback | 390 | 256 (66%) | 127 (33%) | - | ||
Actual Mode: | ||||||
i. Nurse | Non-feedback | 319 | 240 (75%) | 217 (68%) | 245 (77%) | |
Feedback | 358 | 269 (75%) | 256 (72%) | 280 (78%) | ||
ii. Interviewer | Non-feedback | 361 | 289 (80%) | 129 (36%) | - | |
Feedback | 410 | 312 (76%) | 178 (43%) | - | ||
iii. Web | Non-feedback | 365 | 210 (58%) | 99 (27%) | - | |
Feedback | 349 | 221 (63%) | 121 (35%) | - | ||