Table 3. Statistical analysis of each item and construct of the DPC-Reaction questionnaire, scored on a scale of 1–7.
| Construct | Item | Before | After | Wilcoxon signed-rank test P value |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N |
Item mean (SD) | Construct mean (SD)a | Median | N |
Item mean (SD) | Construct mean (SD)a | Median | |||
|
Intention |
I1 |
374 |
5.8 (1.3) |
5.7 (1.2) |
6 |
376 |
6.2 (1.1) |
6.1 (1.1) |
6.5 |
<0.001 |
| I2 |
5.6 (1.3) |
6.0 (1.1) |
||||||||
|
Social influence |
SI1 | 376 | 4.0 (1.7) | 4.8 (1.2) |
5 |
376 |
4.3 (1.6) | 5.0 (1.2) |
5 |
<0.001 |
| SI2 | 5.2 (1.3) | 5.4 (1.1) | ||||||||
| SI3 | 5.2 (1.3) | 5.4 (1.2) | ||||||||
| Beliefs about capabilities | BCa1 | 376 |
5.3 (1.4) | 4.9 (1.2) | 5 | 376 | 6.0 (1.1) | 5.8 (1.0) | 6 | <0.001 |
| BCa2 | 4.6 (1.2) | 5.4 (1.1) | ||||||||
| BCa3 | 4.9 (1.4) | 5.9 (1.1) | ||||||||
| Moral norm | MN1 | 375 | 6.2 (1.1) | 6.2 (0.9) | 6.5 | 376 | 6.4 (0.8) | 6.4 (0.8) | 7 | <0.001 |
| MN2 | 6.1 (1.1) | 6.4 (0.9) | ||||||||
| Beliefs about consequence | BCol1 | 373 |
6.0 (1.2) | 6.0 (1.0) | 6 | 374 | 6.2 (1.0) | 6.2 (1.0) | 6.5 | <0.001 |
| Bcol2 | 6.0 (1.1) | 6.2 (1.0) | ||||||||
N = number of participants (N varies due to missing data); SD = Standard Deviation; CI = Confidence Interval
a Construct means were calculated as the average of their item scores (possible range scale 1 to 7).