Initiation of HPV vaccination and RDs according to parental education and income, N=84 139
| Initiated HPV vaccination | Univariable model | Multivariable model 1* | Multivariable model 2† | |||||
|---|---|---|---|---|---|---|---|---|
| n | % | RD | 95% CI | RD | 95% CI | RD | 95% CI | |
| Maternal education (years of schooling) | ||||||||
| Compulsory (≤ 10) | 11 600 | 78.4 | 0 | Ref | 0 | Ref | ||
| Upper secondary, levels 1 and 2 (11–12) | 5174 | 77.6 | −0.8 | −2.0 to 0.5 | −1.7 | −3.0 to −0.4 | ||
| Upper secondary, completed (13–14) | 21 128 | 79.0 | 0.6 | −0.2 to 1.5 | −1.9 | −2.8 to −1.0 | ||
| Higher, undergraduate level (14–17) | 22 907 | 78.0 | −0.3 | −1.2 to 0.5 | −4.1 | −5.1 to −3.1 | ||
| Higher, graduate level (≥18) | 5034 | 76.7 | −1.6 | −2.9 to −0.4 | −5.5 | −7.0 to −4.0 | ||
| p=0.001 | p<0.0001 | |||||||
| Maternal income quintile (NOK)‡ | ||||||||
| 1 (≤278 599) | 12 294 | 73.1 | 0 | Ref | 0 | Ref | ||
| 2 (278 600–361 617) | 13 223 | 78.6 | 5.5 | 4.6 to 6.5 | 5.1 | 4.1 to 6.1 | ||
| 3 (361 620–433 172) | 13 375 | 79.5 | 6.4 | 5.5 to 7.4 | 6.5 | 5.5 to 7.5 | ||
| 4 (433 179–524 224) | 13 433 | 79.8 | 6.8 | 5.8 to 7.7 | 7.8 | 6.7 to 8.8 | ||
| 5 (≥524 242) | 13 518 | 80.3 | 7.3 | 6.3 to 8.2 | 10.1 | 9.0 to 11.3 | ||
| p<0.0001 | p<0.0001 | |||||||
| Paternal education (years of schooling) | ||||||||
| Compulsory (≤10) | 12 374 | 78.7 | 0 | Ref | 0 | Ref | ||
| Upper secondary, levels 1 and 2 (11–12) | 4 840 | 77.6 | −1.1 | −2.4 to 0.2 | −0.6 | −1.9 to 0.6 | ||
| Upper secondary, completed (13–14) | 27 370 | 79.2 | 0.5 | −0.3 to 1.2 | −0.4 | −1.3 to 0.4 | ||
| Higher, undergraduate level (14–17) | 14 214 | 76.9 | −1.9 | −2.8 to −1.0 | −2.5 | −3.5 to −1.5 | ||
| Higher, graduate level (≥18) | 7 045 | 77.1 | −1.6 | −2.7 to −0.5 | −1.4 | −2.6 to −0.1 | ||
| p<0.0001 | p<0.0001 | |||||||
| Paternal income quintile (NOK)‡ | ||||||||
| 1 (≤ 374 466) | 12 867 | 76.5 | 0 | Ref | 0 | Ref | ||
| 2 (374 478–476 519) | 13 207 | 78.5 | 2.0 | 1.1 to 2.9 | 2.0 | 0.9 to 3.0 | ||
| 3 (476 523–585 410) | 13 353 | 79.3 | 2.9 | 2.0 to 3.8 | 3.4 | 2.4 to 4.5 | ||
| 4 (585 412–796 067) | 13 242 | 78.7 | 2.2 | 1.3 to 3.1 | 3.2 | 2.1 to 4.2 | ||
| 5 (≥796 072) | 13 174 | 78.3 | 1.8 | 0.9 to 2.8 | 3.9 | 2.8 to 5.0 | ||
| p<0.0001 | p<0.0001 | |||||||
*This model included maternal income, education and employment status, country of origin, urbanity, maternal age at birth of daughter, number of siblings, county of residence and year of birth.
†This model included paternal income, education and employment status, country of origin, urbanity, maternal age at birth of daughter, number of siblings, county of residence and year of birth.
‡NOK=Norwegian kroner (€1 EUR≈8.5 NOK).
HPV, human papillomavirus; RD, risk difference.