Table 3 Participant engagement and satisfaction by KT strategy
| Â | CONT | INT | p |
|---|---|---|---|
|  | N = 279 | N = 278 |  |
(At baseline) Which of the following do you plan to use to access study material: | |||
 Email | 274 (98.2) | 269 (96.8) | 0.41 |
 Browse on Portal | 187 (67.0) | 203 (73.0) | 0.15 |
 Facebook | 121 (43.4) | 124 (44.6) | 0.84 |
 Twitter | 35 (12.5) | 47 (16.9) | 0.18 |
|  | N = 251 | N = 244 |  |
Over the 12-week study period, did you access the McMaster Optimal Aging Portal via … (% Yes) | |||
162 (64.5) | 232 (95.1) | < 0.001 | |
 Perceived usefulness (mean ± SD) |  | 5.91 ± 1.33 |  |
 I will continue to use (mean ± SD) |  | 6.09 ± 1.58 |  |
Browse on Portal | 56 (22.3) | 113 (46.3) | < 0.001 |
 Perceived usefulness (mean ± SD) |  | 6.10 ± 1.06 |  |
 I will continue to use (mean ± SD) |  | 6.02 ± 1.28 |  |
18 (7.2) | 37 (15.2) | < 0.01 | |
 Perceived usefulness (mean ± SD) |  | 5.81 ± 1.27 |  |
 I will continue to use (mean ± SD) |  | 6.16 ± 1.24 |  |
3 (1.2) | 13 (5.3) | 0.02 | |
 Perceived usefulness (mean ± SD) |  | 5.62 ± 1.98 |  |
 I will continue to use (mean ± SD) |  | 6.46 ± 1.39 |  |
|  | N = 240 | N = 232 |  |
[At 3-month follow-up] Since the study ended, have you accessed the Portal via…? (% Yes) | |||
163 (67.9) | 182 (78.4) | 0.01 | |
Browse on Portal | 92 (38.3) | 103 (44.4) | 0.21 |
32 (13.3) | 51 (22.0) | 0.02 | |
12 (5.0) | 28 (12.1) | 0.01 | |