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| Time point of survey | Number (%) of correct answers | ||
|---|---|---|---|
| Poster | Leaflet | Control group | |
| The first round of survey | 1076 (58,07) | 1376 (56,34) | 1487 (45,98) |
| The second round of survey | 1150 (62,06) | 1377 (56,39) | no |
| The third round of survey | 1163 (62,76) | 1364 (55,86) | 1569 (48,52) |
| p value | < 0,01 | > 0,05 | < 0,01 |
