Do property-casualty insurance underwriting margins have unit roots?

<?xml version="1.0" encoding="UTF-8"?><modsCollection xmlns="http://www.loc.gov/mods/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-8.xsd">
<mods version="3.8">
<titleInfo>
<title>Do property-casualty insurance underwriting margins have unit roots?</title>
</titleInfo>
<titleInfo type="alternative">
<title>The Journal of risk and insurance</title>
</titleInfo>
<name type="personal" usage="primary" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080265199">
<namePart>Harrington, Scott E.</namePart>
<nameIdentifier>MAPA20080265199</nameIdentifier>
</name>
<name type="personal" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080002916">
<namePart>Yu, Tong</namePart>
<nameIdentifier>MAPA20080002916</nameIdentifier>
</name>
<typeOfResource>text</typeOfResource>
<originInfo>
<place>
<placeTerm type="code" authority="marccountry">usa</placeTerm>
</place>
<dateIssued encoding="marc">2003</dateIssued>
<issuance>serial</issuance>
</originInfo>
<language>
<languageTerm type="code" authority="iso639-2b">eng</languageTerm>
</language>
<physicalDescription>
<form authority="marcform">print</form>
<form authority="marccategory">microform</form>
</physicalDescription>
<abstract>A growing literature analyzes determinants of insurance prices using time series data on insurer underwriting margins. If the variables analyzed are stationary, conventional regression models may be appropriately used to test hypotheses. We apply a battery of unit root tests to investigate whether underwriting margins are stationary under different assumptions concercing deterministic components in the data generating process. The overall findings suggest that conventional regression methods can be used appropriately to analyze underwritting margings after controlling for deterministic influences and transforming any nonstationary regressors</abstract>
<note type="statement of responsibility">Scott E. Harrington, Tong Yu</note>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080602437">
<topic>Matemática del seguro</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080608606">
<topic>Simulación Monte Carlo</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080548766">
<topic>Property</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080546458">
<topic>Casualty</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080579784">
<topic>Costes económicos</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080620752">
<topic>Variables macro-económicas</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080590468">
<topic>Economía del seguro</topic>
</subject>
<classification authority="">6</classification>
<relatedItem type="host">
<titleInfo>
<title>The Journal of risk and insurance</title>
</titleInfo>
<originInfo>
<publisher>Orlando</publisher>
</originInfo>
<part>
<text>Volume 70, number 4, December 2003 ;  p.715-733</text>
</part>
</relatedItem>
<recordInfo>
<recordContentSource authority="marcorg">MAP</recordContentSource>
<recordCreationDate encoding="marc">040609</recordCreationDate>
<recordChangeDate encoding="iso8601">20080418124632.0</recordChangeDate>
<recordIdentifier source="MAP">MAP20071505417</recordIdentifier>
<languageOfCataloging>
<languageTerm type="code" authority="iso639-2b">spa</languageTerm>
</languageOfCataloging>
</recordInfo>
</mods>
</modsCollection>