Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/12040
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dc.contributor.authorCREEMERS, An-
dc.contributor.authorAERTS, Marc-
dc.contributor.authorHENS, Niel-
dc.contributor.authorSHKEDY, Ziv-
dc.contributor.authorDe Smet, Frank-
dc.contributor.authorBeutels, Philippe-
dc.date.accessioned2011-07-04T10:34:45Z-
dc.date.availableNO_RESTRICTION-
dc.date.available2011-07-04T10:34:45Z-
dc.date.issued2011-
dc.identifier.citationJOURNAL OF APPLIED STATISTICS, 38 (8). p. 1533-1547-
dc.identifier.issn0266-4763-
dc.identifier.urihttp://hdl.handle.net/1942/12040-
dc.description.abstractWe aimed to study the excess health-care expenditures for persons with a known positive isolate of Streptococcus pneumoniae. The data set was compiled by linking the database of the largest Belgian Sickness Fund with data obtained from laboratories reporting pneumococcal isolates. We analyzed the age-specific per-patient cumulative costs over time, using generalized estimating equations (GEEs). The mean structure was described by fractional polynomials. The quasi-likelihood under the independence model criterion was used to compare different correlation structures. We show for all age groups that the health-care costs incurred by diagnosed pneumococcal patients are significantly larger than those incurred by undiagnosed matched persons. This is not only the case at the time of diagnosis but also long before and after the time of diagnosis. These findings can be informative for the current debate on unrelated costs in health economic evaluation, and GEEs could be used to estimate these costs for other diseases. Finally, these results can be used to inform policy on the expected budget impact of preventing pneumococcal infections.-
dc.description.sponsorshipThis study was co-funded by a strategic basic research project on simulation models of infectious disease transmission and control processes (SIMID) of the Institute for the Promotion of Innovation by Science and Technology in Flanders (IWT), project number 060081 and the Belgian Health Care Knowledge Centre. We also gratefully acknowledge the support from the IAP research network nr P6/03 of the Belgian Government (Belgian Science Policy).-
dc.language.isoen-
dc.publisherROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD-
dc.subject.otherfractional polynomials; generalized estimating equations; QIC; S. pneumoniae; unrelated costs-
dc.subject.otherfractional polynomials; generalized estimating equations; QIC; S. pneumoniae; unrelated costs-
dc.titleRevealing age-specific past and future unrelated costs of pneumococcal infections by flexible generalized estimating equations-
dc.typeJournal Contribution-
dc.identifier.epage1547-
dc.identifier.issue8-
dc.identifier.spage1533-
dc.identifier.volume38-
local.format.pages15-
local.bibliographicCitation.jcatA1-
dc.description.notes[Creemers, An; Aerts, Marc; Hens, Niel; Shkedy, Ziv] Hasselt Univ, Interuniv Inst Biostat, Diepenbeek, Belgium. [Creemers, An; Aerts, Marc; Hens, Niel; Shkedy, Ziv] Catholic Univ Leuven, Louvain, Belgium. [Hens, Niel; Beutels, Philippe] Univ Antwerp, Ctr Evaluat Vaccinat, Ctr Hlth Econ Res & Modeling Infect Dis, B-2020 Antwerp, Belgium. [Hens, Niel; Beutels, Philippe] Univ Antwerp, Vaccine & Infect Dis Inst, B-2020 Antwerp, Belgium. [De Smet, Frank] Natl Alliance Christian Mutual, Med Direct, Brussels, Belgium. an.creemers@uhasselt.be-
local.type.refereedRefereed-
local.type.specifiedArticle-
dc.bibliographicCitation.oldjcatA1-
dc.identifier.doi10.1080/02664763.2010.515302-
dc.identifier.isi000291464400001-
item.validationecoom 2012-
item.accessRightsRestricted Access-
item.fullcitationCREEMERS, An; AERTS, Marc; HENS, Niel; SHKEDY, Ziv; De Smet, Frank & Beutels, Philippe (2011) Revealing age-specific past and future unrelated costs of pneumococcal infections by flexible generalized estimating equations. In: JOURNAL OF APPLIED STATISTICS, 38 (8). p. 1533-1547.-
item.fulltextWith Fulltext-
item.contributorCREEMERS, An-
item.contributorAERTS, Marc-
item.contributorHENS, Niel-
item.contributorSHKEDY, Ziv-
item.contributorDe Smet, Frank-
item.contributorBeutels, Philippe-
crisitem.journal.issn0266-4763-
crisitem.journal.eissn1360-0532-
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