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Table 3 HPV general knowledge amongst all girls participating in our study (n = 2989), the Netherlands 2010

From: Equity in human papilloma virus vaccination uptake?: sexual behaviour, knowledge and demographics in a cross-sectional study in (un)vaccinated girls in the Netherlands

Category Total Vaccinated Unvaccinated OR (95% CI) for being vaccinated P-value
N (%) n (%) n (%)
  2989 (100) 1938 (65) 1051 (35)   
HPV vaccination protects against all HPV types (n=2910)    
  No 1811 (62) 1110 (58) 701 (70) ref  
  Yes 373 (13) 291 (15) 82 (8) 2.2 (1.7–2.9)  
  Don’t know 726 (25) 505 (27) 221 (22) 1.4 (1.2–1.7) <0.001
HPV vaccination protects against all STIs (n=2909)    
  No 2567 (88) 1702 (89) 865 (86) ref  
  Yes 52 (2) 33 (2) 19 (2) 0.9 (0.5–1.6)  
  Don’t know 290 (10) 170 (9) 120 (12) 0.7 (0.6–0.9) 0.03
An HPV infection always leads to cervical cancer (n=2930)    
  No 1984 (68) 1294 (68) 690 (68) ref  
  Yes 121 (4) 80 (4) 41 (4) 1.0 (0.7–1.5)  
  Don’t know 825 (28) 541 (28) 284 (28) 1.0 (0.9–1.2) 0.97
Cervical cancer is always fatal (n=2930)    
  No 2414 (82) 1579 (82) 835 (82) ref  
  Yes 141 (5) 98 (5) 43 (4) 1.2 (0.8–1.8)  
  Don’t know 375 (13) 238 (12) 137 (14) 0.9 (0.7–1.2) 0.43
If you have unprotected sex, you are at high risk of an HPV infection (n=2930)  
  No 311 (11) 193 (10) 118 (12) ref  
  Yes 2143 (73) 1411 (74) 732 (72) 1.2 (0.9–1.5)  
  Don’t know 476 (16) 311 (16) 165 (16) 1.2 (0.9–1.6) 0.42
An HPV infection is a risk for cervical cancer (n=2930)    
  No 215 (7) 144 (8) 71 (7) ref  
  Yes 2370 (81) 1555 (81) 815 (80) 0.9 (0.7–1.3)  
  Don’t know 345 (12) 216 (11) 129 (13) 0.8 (0.6–1.2) 0.48
An HPV infection can cause genital warts (n=2929)    
  No 537 (18) 354 (18) 183 (18) ref  
  Yes 582 (20) 389 (20) 193 (19) 1.0 (0.8–1.3)  
  Don’t know 1810 (62) 1172 (61) 638 (63) 1.0 (0.8–1.2) 0.63
An HPV infection usually disappears on its own (n=2930)    
  No 1969 (67) 1301 (68) 668 (66) ref  
  Yes 136 (5) 80 (4) 56 (6) 0.7 (0.5–1.0)  
  Don’t know 825 (28) 534 (28) 291 (29) 0.9 (0.8–1.1) 0.21
Awareness of CC screening program (n=2910)    
  No 1421 (49) 984(52) 437 (43) ref  
  Yes 1489 (51) 921 (48) 568 (57) 0.7 (0.6–0.8) <0.001
Participation of mother in CC screening program (n=2910)    
  No 670 (23) 410 (22) 260 (26) ref  
  Yes 1192 (41) 798 (42) 394 (39) 1.3 (1.1–1.6)  
  Don’t know 1048 (36) 697 (37) 351 (35) 1.3 (1.0–1.5) 0.03
Need to participate in the CC screening program after vaccination (n=2910)   
  No 174 (6) 115 (6) 59 (6) ref  
  Yes 2013 (69) 1346 (71) 667 (66) 1.0 (0.7–1.4)  
  Don’t know 723 (25) 444 (23) 279 (28) 0.8 (0.6–1.2) 0.03
Condoms are not needed anymore once vaccinated (n=2909)    
  No 2781 (96) 1842 (97) 939 (94) ref  
  Yes 22 (1) 15 (1) 7 (1) 1.1 (0.5–2.9)  
  Don’t know 106 (3) 48 (3) 58 (6) 0.4 (0.3–0.6) <0.001
Girls will use less condoms once vaccinated (n=2909)    
  No 1526 (52) 1076 (56) 450 (45) ref  
  Yes 574 (20) 317 (17) 257 (26) 0.5 (0.4–0.6)  
  Don’t know 809 (28) 512 (27) 297 (30) 0.7 (0.6–0.9) <0.001
General knowledge score    
  mean (95% CI) 5.52 (5.48–5.56) 5.51 (5.47–5.56) 5.53 (5.47–5.59)   0.62
  1. CC = cervical cancer.
  2. Missing values are deducted from the total number of girls.