Table 6 Knowledge of the consequences (percentage of correct answers) of HPV vaccination reported by vaccinated and unvaccinated girls
| Â | Round 1a | Round 2 | Round 3 | Round 4 | Round 5 | Â | Â |
|---|---|---|---|---|---|---|---|
Category | n (%) | n (%) | n (%) | n (%) | n (%) | p-value | Mean difference (+ 95% CI) |
HPV vaccination score (mean 95%CI) | |||||||
 Unvaccinated | 2.50 (2.45–2.54) | 2.46 (2.40–2.52) | 2.59 (2.53–2.65) | 2.60 (2.54–2.65) | 2.67 (2.62–2.73) | < 0.01 | Ref |
 Vaccinated | 2.44 (2.41–2.47) | 2.40 (2.36–2.43) | 2.50 (2.46–2.53) | 2.54 (2.51–2.57) | 2.67 (2.64–2.71) | < 0.01 | (b1) -0.07 (−0.12--0.01) |
|  |  |  |  |  |  |  | (b2) 0.03 (0.02–0.04) |
|  |  |  |  |  |  |  | (b3) 0.02 (0.00–0.04) |
Vaccination protects against all HPV types (No) | |||||||
 Unvaccinated | 701 (70) | 416 (63) | 384 (69) | 388 (69) | 360 (75) |  |  |
 Vaccinated | 1110 (58) | 638 (48) | 665 (55) | 697 (58) | 753 (73) |  |  |
HPV vaccination protects against all STIs (No) | |||||||
 Unvaccinated | 865 (86) | 574 (88) | 518 (93) | 520 (93) | 454 (95) |  |  |
 Vaccinated | 1702 (89) | 1246 (94) | 1144 (95) | 1159 (97) | 1008 (97) |  |  |
Condoms are not needed anymore once vaccinated (No) | |||||||
 Unvaccinated | 939 (94) | 623 (95) | 542 (97) | 545 (98) | 468 (98) |  |  |
 Vaccinated | 1842 (97) | 1297 (98) | 1187 (99) | 1186 (99) | 1016 (98) |  |  |