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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Association of Hospitalizations for Asthma with Seasonal and Pandemic Influenza</title>
<author><name sortKey="Gerke, Alicia K" sort="Gerke, Alicia K" uniqKey="Gerke A" first="Alicia K." last="Gerke">Alicia K. Gerke</name>
<affiliation><nlm:aff id="A1">University of Iowa Department of Internal Medicine: 200 Hawkins Dr., Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Yang, Ming" sort="Yang, Ming" uniqKey="Yang M" first="Ming" last="Yang">Ming Yang</name>
<affiliation><nlm:aff id="A2">Harvard School of Public Health: 651 Huntington Avenue, Boston, Massachusetts 02115</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Tang, Fan" sort="Tang, Fan" uniqKey="Tang F" first="Fan" last="Tang">Fan Tang</name>
<affiliation><nlm:aff id="A3">University of Iowa Department of Biostatistics: 105 River Street, Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Foster, Eric D" sort="Foster, Eric D" uniqKey="Foster E" first="Eric D." last="Foster">Eric D. Foster</name>
<affiliation><nlm:aff id="A3">University of Iowa Department of Biostatistics: 105 River Street, Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Cavanaugh, Joseph E" sort="Cavanaugh, Joseph E" uniqKey="Cavanaugh J" first="Joseph E." last="Cavanaugh">Joseph E. Cavanaugh</name>
<affiliation><nlm:aff id="A3">University of Iowa Department of Biostatistics: 105 River Street, Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Polgreen, Philip M" sort="Polgreen, Philip M" uniqKey="Polgreen P" first="Philip M." last="Polgreen">Philip M. Polgreen</name>
<affiliation><nlm:aff id="A1">University of Iowa Department of Internal Medicine: 200 Hawkins Dr., Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PMC</idno>
<idno type="pmid">23931674</idno>
<idno type="pmc">3877191</idno>
<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3877191</idno>
<idno type="RBID">PMC:3877191</idno>
<idno type="doi">10.1111/resp.12165</idno>
<date when="2014">2014</date>
<idno type="wicri:Area/Pmc/Corpus">000896</idno>
<idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000896</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Association of Hospitalizations for Asthma with Seasonal and Pandemic Influenza</title>
<author><name sortKey="Gerke, Alicia K" sort="Gerke, Alicia K" uniqKey="Gerke A" first="Alicia K." last="Gerke">Alicia K. Gerke</name>
<affiliation><nlm:aff id="A1">University of Iowa Department of Internal Medicine: 200 Hawkins Dr., Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Yang, Ming" sort="Yang, Ming" uniqKey="Yang M" first="Ming" last="Yang">Ming Yang</name>
<affiliation><nlm:aff id="A2">Harvard School of Public Health: 651 Huntington Avenue, Boston, Massachusetts 02115</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Tang, Fan" sort="Tang, Fan" uniqKey="Tang F" first="Fan" last="Tang">Fan Tang</name>
<affiliation><nlm:aff id="A3">University of Iowa Department of Biostatistics: 105 River Street, Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Foster, Eric D" sort="Foster, Eric D" uniqKey="Foster E" first="Eric D." last="Foster">Eric D. Foster</name>
<affiliation><nlm:aff id="A3">University of Iowa Department of Biostatistics: 105 River Street, Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Cavanaugh, Joseph E" sort="Cavanaugh, Joseph E" uniqKey="Cavanaugh J" first="Joseph E." last="Cavanaugh">Joseph E. Cavanaugh</name>
<affiliation><nlm:aff id="A3">University of Iowa Department of Biostatistics: 105 River Street, Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Polgreen, Philip M" sort="Polgreen, Philip M" uniqKey="Polgreen P" first="Philip M." last="Polgreen">Philip M. Polgreen</name>
<affiliation><nlm:aff id="A1">University of Iowa Department of Internal Medicine: 200 Hawkins Dr., Iowa City, Iowa 52242</nlm:aff>
</affiliation>
</author>
</analytic>
<series><title level="j">Respirology (Carlton, Vic.)</title>
<idno type="ISSN">1323-7799</idno>
<idno type="eISSN">1440-1843</idno>
<imprint><date when="2014">2014</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass></textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"><sec id="S1"><title>Background and objective</title>
<p id="P1">Although influenza has been associated with asthma exacerbations, it is not clear the extent to which this association affects healthcare use in the United States (U.S.). The first goal of this project was to determine whether, and to what extent, the incidence of asthma hospitalizations is associated with seasonal variation in influenza. Second, we used influenza trends (2000-2008) to help predict asthma admissions during the 2009 H1N1 influenza pandemic.</p>
</sec>
<sec id="S2"><title>Methods</title>
<p id="P2">We identified all hospitalizations between 1998 and 2008 in the Nationwide Inpatient Sample from the Healthcare Cost and Utilization Project during which a primary diagnosis of asthma was recorded. Separately, we identified all hospitalizations during which a diagnosis of influenza was recorded. We performed time series regression analyses to investigate the association of monthly asthma admissions with influenza incidence. Finally, we applied these time series regression models using 1998-2008 data, to forecast monthly asthma admissions during the 2009 influenza pandemic.</p>
</sec>
<sec id="S3"><title>Results</title>
<p id="P3">Based on time series regression models, a strong, significant association exists between concurrent influenza activity and incidence of asthma hospitalizations (p-value<0.0001). Use of influenza data to predict asthma admissions during the 2009 H1N1 pandemic improved the mean squared prediction error by 60.2%.</p>
</sec>
<sec id="S4"><title>Conclusions</title>
<p id="P4">Influenza activity in the population is significantly associated with asthma hospitalizations in the U.S., and this association can be exploited to more accurately forecast asthma admissions. Our results suggest that improvements in influenza surveillance, prevention, and treatment may decrease hospitalizations of asthma patients.</p>
</sec>
</div>
</front>
</TEI>
<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<pmc-dir>properties manuscript</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-journal-id">9616368</journal-id>
<journal-id journal-id-type="pubmed-jr-id">20774</journal-id>
<journal-id journal-id-type="nlm-ta">Respirology</journal-id>
<journal-id journal-id-type="iso-abbrev">Respirology</journal-id>
<journal-title-group><journal-title>Respirology (Carlton, Vic.)</journal-title>
</journal-title-group>
<issn pub-type="ppub">1323-7799</issn>
<issn pub-type="epub">1440-1843</issn>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">23931674</article-id>
<article-id pub-id-type="pmc">3877191</article-id>
<article-id pub-id-type="doi">10.1111/resp.12165</article-id>
<article-id pub-id-type="manuscript">NIHMS517545</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>Association of Hospitalizations for Asthma with Seasonal and Pandemic Influenza</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Gerke</surname>
<given-names>Alicia K.</given-names>
</name>
<xref ref-type="aff" rid="A1">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Yang</surname>
<given-names>Ming</given-names>
</name>
<xref ref-type="aff" rid="A2">2</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Tang</surname>
<given-names>Fan</given-names>
</name>
<xref ref-type="aff" rid="A3">3</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Foster</surname>
<given-names>Eric D.</given-names>
</name>
<xref ref-type="aff" rid="A3">3</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Cavanaugh</surname>
<given-names>Joseph E.</given-names>
</name>
<xref ref-type="aff" rid="A3">3</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Polgreen</surname>
<given-names>Philip M.</given-names>
</name>
<xref ref-type="aff" rid="A1">1</xref>
</contrib>
</contrib-group>
<aff id="A1"><label>1</label>
University of Iowa Department of Internal Medicine: 200 Hawkins Dr., Iowa City, Iowa 52242</aff>
<aff id="A2"><label>2</label>
Harvard School of Public Health: 651 Huntington Avenue, Boston, Massachusetts 02115</aff>
<aff id="A3"><label>3</label>
University of Iowa Department of Biostatistics: 105 River Street, Iowa City, Iowa 52242</aff>
<author-notes><corresp id="CR1"><bold>Correspondence:</bold>
Philip M. Polgreen, MD, University of Iowa Department of Internal Medicine: 200 Hawkins Dr., Iowa City, Iowa 52242, Phone: 319-356-1616, Fax: 319-353-6406. <email>philip-polgreen@uiowa.edu</email>
</corresp>
</author-notes>
<pub-date pub-type="nihms-submitted"><day>24</day>
<month>9</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="ppub"><month>1</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>01</day>
<month>1</month>
<year>2015</year>
</pub-date>
<volume>19</volume>
<issue>1</issue>
<elocation-id>10.1111/resp.12165</elocation-id>
<abstract><sec id="S1"><title>Background and objective</title>
<p id="P1">Although influenza has been associated with asthma exacerbations, it is not clear the extent to which this association affects healthcare use in the United States (U.S.). The first goal of this project was to determine whether, and to what extent, the incidence of asthma hospitalizations is associated with seasonal variation in influenza. Second, we used influenza trends (2000-2008) to help predict asthma admissions during the 2009 H1N1 influenza pandemic.</p>
</sec>
<sec id="S2"><title>Methods</title>
<p id="P2">We identified all hospitalizations between 1998 and 2008 in the Nationwide Inpatient Sample from the Healthcare Cost and Utilization Project during which a primary diagnosis of asthma was recorded. Separately, we identified all hospitalizations during which a diagnosis of influenza was recorded. We performed time series regression analyses to investigate the association of monthly asthma admissions with influenza incidence. Finally, we applied these time series regression models using 1998-2008 data, to forecast monthly asthma admissions during the 2009 influenza pandemic.</p>
</sec>
<sec id="S3"><title>Results</title>
<p id="P3">Based on time series regression models, a strong, significant association exists between concurrent influenza activity and incidence of asthma hospitalizations (p-value<0.0001). Use of influenza data to predict asthma admissions during the 2009 H1N1 pandemic improved the mean squared prediction error by 60.2%.</p>
</sec>
<sec id="S4"><title>Conclusions</title>
<p id="P4">Influenza activity in the population is significantly associated with asthma hospitalizations in the U.S., and this association can be exploited to more accurately forecast asthma admissions. Our results suggest that improvements in influenza surveillance, prevention, and treatment may decrease hospitalizations of asthma patients.</p>
</sec>
</abstract>
<kwd-group><kwd>Asthma</kwd>
<kwd>Forecasting</kwd>
<kwd>Health Care Utilization</kwd>
<kwd>Influenza</kwd>
<kwd>Resource Allocation</kwd>
</kwd-group>
<funding-group><award-group><funding-source country="United States">National Institute of Allergy and Infectious Diseases Extramural Activities : NIAID</funding-source>
<award-id>K01 AI075089 || AI</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
</pmc>
</record>
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