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<meta name="DC.Title" content="Interobserver Agreement in the Interpretation of Outpatient Head CT Scans in an Academic Neuroradiology Practice" />
<meta name="DC.Identifier" content="10.3174/ajnr.A4058" />
<meta name="DC.Date" content="2015-01-01" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: The repeatability of head CT interpretations may be studied in different contexts: in peer-review quality assurance interventions or in interobserver agreement studies. We assessed the agreement between double-blind reports of outpatient CT scans in a routine academic practice.

MATERIALS AND METHODS: Outpatient head CT scans (119 patients) were randomly selected to be read twice in a blinded fashion by 8 neuroradiologists practicing in an academic institution during 1 year. Nonstandardized reports were analyzed to extract 4 items (answer to the clinical question, major findings, incidental findings, recommendations for further investigations) from each report, to identify agreement or discrepancies (classified as class 2 [mentioned or not mentioned or contradictions between reports], class 1 [mentioned in both reports but diverging in location or severity], 0 [concordant], or not applicable), according to a standardized data-extraction form. Agreement regarding the presence or absence of clinically significant or incidental findings was studied with κ statistics.

RESULTS: The interobserver agreement regarding head CT studies with positive and negative results for clinically pertinent findings was 0.86 (0.77–0.95), but concordance was only 75.6% (67.2%–82.5%). Class 2 discrepancy was found in 15.1%; class 1 discrepancy, in 9.2% of cases. The κ value for reporting incidental findings was 0.59 (0.45–0.74), with class 2 discrepancy in 29.4% of cases. Most discrepancies did not impact the clinical management of patients.

CONCLUSIONS: Discrepancies in double-blind interpretations of head CT examinations were more common than reported in peer-review quality assurance programs.

CHUM
:   Centre Hospitalier de l'Université de Montréal" />
<meta name="DC.Contributor" content="G. Guérin" />
<meta name="DC.Contributor" content="S. Jamali" />
<meta name="DC.Contributor" content="C.A. Soto" />
<meta name="DC.Contributor" content="F. Guilbert" />
<meta name="DC.Contributor" content="J. Raymond" />
<meta name="article:published_time" content="2015-01-01" />
<meta name="article:section" content="Practice Perspectives" />
<meta name="citation_title" content="Interobserver Agreement in the Interpretation of Outpatient Head CT Scans in an Academic Neuroradiology Practice" />
<meta name="citation_abstract" lang="en" content="&lt;h3&gt;BACKGROUND AND PURPOSE:&lt;/h3&gt;
&lt;p&gt;The repeatability of head CT interpretations may be studied in different contexts: in peer-review quality assurance interventions or in interobserver agreement studies. We assessed the agreement between double-blind reports of outpatient CT scans in a routine academic practice.&lt;/p&gt;&lt;h3&gt;MATERIALS AND METHODS:&lt;/h3&gt;
&lt;p&gt;Outpatient head CT scans (119 patients) were randomly selected to be read twice in a blinded fashion by 8 neuroradiologists practicing in an academic institution during 1 year. Nonstandardized reports were analyzed to extract 4 items (answer to the clinical question, major findings, incidental findings, recommendations for further investigations) from each report, to identify agreement or discrepancies (classified as class 2 [mentioned or not mentioned or contradictions between reports], class 1 [mentioned in both reports but diverging in location or severity], 0 [concordant], or not applicable), according to a standardized data-extraction form. Agreement regarding the presence or absence of clinically significant or incidental findings was studied with κ statistics.&lt;/p&gt;&lt;h3&gt;RESULTS:&lt;/h3&gt;
&lt;p&gt;The interobserver agreement regarding head CT studies with positive and negative results for clinically pertinent findings was 0.86 (0.77–0.95), but concordance was only 75.6% (67.2%–82.5%). Class 2 discrepancy was found in 15.1%; class 1 discrepancy, in 9.2% of cases. The κ value for reporting incidental findings was 0.59 (0.45–0.74), with class 2 discrepancy in 29.4% of cases. Most discrepancies did not impact the clinical management of patients.&lt;/p&gt;&lt;h3&gt;CONCLUSIONS:&lt;/h3&gt;
&lt;p&gt;Discrepancies in double-blind interpretations of head CT examinations were more common than reported in peer-review quality assurance programs.&lt;/p&gt;" />
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<meta name="twitter:description" content="BACKGROUND AND PURPOSE: The repeatability of head CT interpretations may be studied in different contexts: in peer-review quality assurance interventions or in interobserver agreement studies. We assessed the agreement between double-blind reports of outpatient CT scans in a routine academic practice.

MATERIALS AND METHODS: Outpatient head CT scans (119 patients) were randomly selected to be read twice in a blinded fashion by 8 neuroradiologists practicing in an academic institution during 1 year. Nonstandardized reports were analyzed to extract 4 items (answer to the clinical question, major findings, incidental findings, recommendations for further investigations) from each report, to identify agreement or discrepancies (classified as class 2 [mentioned or not mentioned or contradictions between reports], class 1 [mentioned in both reports but diverging in location or severity], 0 [concordant], or not applicable), according to a standardized data-extraction form. Agreement regarding the presence or absence of clinically significant or incidental findings was studied with κ statistics.

RESULTS: The interobserver agreement regarding head CT studies with positive and negative results for clinically pertinent findings was 0.86 (0.77–0.95), but concordance was only 75.6% (67.2%–82.5%). Class 2 discrepancy was found in 15.1%; class 1 discrepancy, in 9.2% of cases. The κ value for reporting incidental findings was 0.59 (0.45–0.74), with class 2 discrepancy in 29.4% of cases. Most discrepancies did not impact the clinical management of patients.

CONCLUSIONS: Discrepancies in double-blind interpretations of head CT examinations were more common than reported in peer-review quality assurance programs.

CHUM
:   Centre Hospitalier de l'Université de Montréal" />
<meta name="og-title" property="og:title" content="Interobserver Agreement in the Interpretation of Outpatient Head CT Scans in an Academic Neuroradiology Practice" />
<meta name="og-url" property="og:url" content="http://ajnr-stage2.stage.highwire.org/content/36/1/24" />
<meta name="og-site-name" property="og:site_name" content="American Journal of Neuroradiology" />
<meta name="og-description" property="og:description" content="BACKGROUND AND PURPOSE: The repeatability of head CT interpretations may be studied in different contexts: in peer-review quality assurance interventions or in interobserver agreement studies. We assessed the agreement between double-blind reports of outpatient CT scans in a routine academic practice.

MATERIALS AND METHODS: Outpatient head CT scans (119 patients) were randomly selected to be read twice in a blinded fashion by 8 neuroradiologists practicing in an academic institution during 1 year. Nonstandardized reports were analyzed to extract 4 items (answer to the clinical question, major findings, incidental findings, recommendations for further investigations) from each report, to identify agreement or discrepancies (classified as class 2 [mentioned or not mentioned or contradictions between reports], class 1 [mentioned in both reports but diverging in location or severity], 0 [concordant], or not applicable), according to a standardized data-extraction form. Agreement regarding the presence or absence of clinically significant or incidental findings was studied with κ statistics.

RESULTS: The interobserver agreement regarding head CT studies with positive and negative results for clinically pertinent findings was 0.86 (0.77–0.95), but concordance was only 75.6% (67.2%–82.5%). Class 2 discrepancy was found in 15.1%; class 1 discrepancy, in 9.2% of cases. The κ value for reporting incidental findings was 0.59 (0.45–0.74), with class 2 discrepancy in 29.4% of cases. Most discrepancies did not impact the clinical management of patients.

CONCLUSIONS: Discrepancies in double-blind interpretations of head CT examinations were more common than reported in peer-review quality assurance programs.

CHUM
:   Centre Hospitalier de l'Université de Montréal" />
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      <h1 class="highwire-cite-title" id="page-title">Interobserver Agreement in the Interpretation of Outpatient Head CT Scans in an Academic Neuroradiology Practice</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">G. Guérin</span>, <span class="highwire-citation-author" data-delta="1">S. Jamali</span>, <span class="highwire-citation-author" data-delta="2">C.A. Soto</span>, <span class="highwire-citation-author" data-delta="3">F. Guilbert</span> and <span class="highwire-citation-author" data-delta="4">J. Raymond</span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">January 2015,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">36 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(1) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">24-29; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A4058 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-13842--81599272694" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">G. Guérin </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Department of Radiology (G.G., C.A.S., F.G., J.R.), Centre Hospitalier de l'Université de Montréal, Notre-Dame Hospital, Montreal, Quebec, Canada</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=G.%2BGu%C3%A9rin%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Gu%C3%A9rin%20G&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AG.%2BGu%25C3%25A9rin%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">S. Jamali </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Laboratory of Interventional Neuroradiology (S.J., J.R.), Centre Hospitalier de l'Université de Montréal, Notre-Dame Hospital Research Centre, Montreal, Quebec, Canada.</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=S.%2BJamali%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Jamali%20S&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AS.%2BJamali%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-2"><div class="author-tooltip-name">C.A. Soto </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Department of Radiology (G.G., C.A.S., F.G., J.R.), Centre Hospitalier de l'Université de Montréal, Notre-Dame Hospital, Montreal, Quebec, Canada</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=C.A.%2BSoto%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Soto%20C&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AC.A.%2BSoto%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-3"><div class="author-tooltip-name">F. Guilbert </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Department of Radiology (G.G., C.A.S., F.G., J.R.), Centre Hospitalier de l'Université de Montréal, Notre-Dame Hospital, Montreal, Quebec, Canada</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=F.%2BGuilbert%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Guilbert%20F&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AF.%2BGuilbert%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-4"><div class="author-tooltip-name">J. Raymond </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Department of Radiology (G.G., C.A.S., F.G., J.R.), Centre Hospitalier de l'Université de Montréal, Notre-Dame Hospital, Montreal, Quebec, Canada</div><div class='author-affiliation'><span class='nlm-sup'>b</span>Laboratory of Interventional Neuroradiology (S.J., J.R.), Centre Hospitalier de l'Université de Montréal, Notre-Dame Hospital Research Centre, Montreal, Quebec, Canada.</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=J.%2BRaymond%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Raymond%20J&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AJ.%2BRaymond%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div></div></div>  </div>

  
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    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">G.</span> <span class="nlm-surname">Guérin</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">S.</span> <span class="nlm-surname">Jamali</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">C.A.</span> <span class="nlm-surname">Soto</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">F.</span> <span class="nlm-surname">Guilbert</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Raymond</span></span></span></div>
  
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      <div class="highwire-cite-title">Interobserver Agreement in the Interpretation of Outpatient Head CT Scans in an Academic Neuroradiology Practice</div>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">G.</span> <span class="nlm-surname">Guérin</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">S.</span> <span class="nlm-surname">Jamali</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">C.A.</span> <span class="nlm-surname">Soto</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">F.</span> <span class="nlm-surname">Guilbert</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Raymond</span></span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">Jan 2015, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">36 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(1) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">24-29; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A4058 </span></div>
  
  
  
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