Print Email Facebook Twitter Is attrition bias a problem in neonatal follow-up? Title Is attrition bias a problem in neonatal follow-up? Author Hille, E.T.M. den Ouden, A.L. Stuifbergen, M.C. Verrips, G.H.W. Vogels, A.G.C. Brand, R. Gravenhorst, J.B. Verloove-Vanhorick, S.P. TNO Kwaliteit van Leven Publication year 2005 Abstract Aim: To assess whether attrition rate influences outcome in the follow-up of very preterm infants. Study design: In a national follow-up study of infants born alive in 1983 in the Netherlands with a gestational age less than 32 weeks and/or a birth weight less than 1500 g, outcome was assessed separately for adolescents who responded early or late to a follow-up invitation at age 14 years. Neonatal data and outcome results of earlier assessments from early and late responders were compared to those of non-responders by univariate and nominal (polytomous logistic) regression analysis. Subjects: There were 723 (76%) early responders, 130 (14%) late responders and 109 (11%) non-responders. Results: We found significantly more non-Dutch origin and more disabilities and school problems at age 10 years in late- and especially in non-responders. At age 14 years, the health utility index was significantly lower in late responders compared to early responders. School outcome did not show difference in relation to the response groups. Conclusion: The results suggest that the incidence of adverse outcome in very preterm infants is underestimated when follow-up is incomplete and hence response rate is not a negligible problem in the assessment of late outcome. Therefore, follow-up studies should include a drop-out analysis to enable comparison to other studies. Subject HealthAttrition biasVery low birth-weight infantsVery preterm infantsAcademic achievementControlled studyDisabilityLogistic regression analysisLow birth weightNewbornPrematuritySmall for date infantAdolescentChildChild, PreschoolFemaleFollow-Up StudiesHumansInfant, NewbornInfant, PrematureMaleNetherlandsPremature BirthSelection Bias To reference this document use: http://resolver.tudelft.nl/uuid:00d12afd-5bb0-44c2-a9df-e7c13d4b66dc DOI https://doi.org/10.1016/j.earlhumdev.2005.07.006 TNO identifier 238797 ISSN 0378-3782 Source Early Human Development, 81 (11), 901-908 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.