• Eva Lefevere, Niel Hens, Heidi Theeten, Karel Van den Bosch, Philippe Beutels, Frank De Smet, and Pierre Van Damme.
• Herman Deleeck Centre for Social Policy, Antwerp University, St Jacobstraat 2, Antwerpen, Belgium. eva.lefevere@ua.ac.be
• Vaccine. 2011 Oct 26; 29 (46): 8390-6.

ObjectiveWe investigated whether and to what extent the uptake of the Human Papillomavirus (HPV) vaccine by girls aged 12-18 was related to the cervical cancer screening history of age-appropriate older female household members (assumed to be their mothers) in Flanders (Belgium).MethodsWe studied administrative records on 127,854 female members of the National Alliance of Christian Mutualities, which is the largest health insurance fund in Flanders. Reimbursement data for HPV vaccination of girls for the period 2007-2009 were linked with reimbursement data for cervical cancer screening of their mothers in the three preceding years. A multilevel logit model was used to study associations between both preventive behaviors. In the model we controlled for both the girl's and the mother's age, the province of residence and the socio-economic background of the family.ResultsA clear association between a mother's history of participation in cervical cancer screening and her daughter's HPV vaccination initiation was found. The conditional odds of HPV vaccination initiation were more than 4 times higher for girls whose mother had one Pap test than for girls whose mother had none (odds ratio [OR]=4.5; 95% confidence interval [CI]=3.5-5.9). For girls whose mother had three or more Pap tests, the conditional odds were 16 times higher than for girls whose mother did not have any pap tests ([OR]=16.0; 95% [CI]=12.1-21.2). The effect of screening (having received 1 pap smear as compared to none) was larger for girls living in neighborhoods with the lowest median income ([OR]=6.0, 95% [CI]=3.6-10.1).ConclusionIn a situation where both cervical cancer screening and HPV vaccination are opportunistic, we found evidence that these preventive behaviors cluster within families.Copyright © 2011 Elsevier Ltd. All rights reserved.

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