| Variable | 18 - 25 | 26 - 30 | 31 - 35 | 36 - 40 | 40+ | Total |
| Television (TV) | 10 | 2 | 3 | 0 | 9 | 24 |
| Social media | 36 | 14 | 21 | 5 | 24 | 91 |
| CPR training course | 26 | 9 | 5 | 1 | 18 | 51 |
| Relatives or friend | 9 | 3 | 1 | 5 | 5 | 25 |
| Education centers | 20 | 8 | 7 | 2 | 0 | 40 |
| Through reading in the media | 4 | 0 | 0 | 0 | 10 | 26 |
| Total | 105 | 36 | 37 | 13 | 66 | 257 |