Combining risk factors with faecal immunochemical test outcome for selecting CRC screenees for colonoscopy

Objective Faecal immunochemical testing (FIT) is increasingly used in colorectal cancer (CRC) screening but has a less than perfect sensitivity. Combining risk stratification, based on established risk factors for advanced neoplasia, with the FIT result for allocating screenees to colonoscopy could...

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Veröffentlicht in:Gut 2014-03, Vol.63 (3), p.466-471
Hauptverfasser: Stegeman, Inge, de Wijkerslooth, Thomas R, Stoop, Esther M, van Leerdam, Monique E, Dekker, Evelien, van Ballegooijen, Marjolein, Kuipers, Ernst J, Fockens, Paul, Kraaijenhagen, Roderik A, Bossuyt, Patrick M
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container_end_page 471
container_issue 3
container_start_page 466
container_title Gut
container_volume 63
creator Stegeman, Inge
de Wijkerslooth, Thomas R
Stoop, Esther M
van Leerdam, Monique E
Dekker, Evelien
van Ballegooijen, Marjolein
Kuipers, Ernst J
Fockens, Paul
Kraaijenhagen, Roderik A
Bossuyt, Patrick M
description Objective Faecal immunochemical testing (FIT) is increasingly used in colorectal cancer (CRC) screening but has a less than perfect sensitivity. Combining risk stratification, based on established risk factors for advanced neoplasia, with the FIT result for allocating screenees to colonoscopy could increase the sensitivity and diagnostic yield of FIT-based screening. We explored the use of a risk prediction model in CRC screening. Design We collected data in the colonoscopy arm of the Colonoscopy or Colonography for Screening study, a multicentre screening trial. For this study 6600 randomly selected, asymptomatic men and women between 50 years and 75 years of age were invited to undergo colonoscopy. Screening participants were asked for one sample FIT (OC-sensor) and to complete a risk questionnaire prior to colonoscopy. Based on the questionnaire data and the FIT results, we developed a multivariable risk model with the following factors: total calcium intake, family history, age and FIT result. We evaluated goodness-of-fit, calibration and discrimination, and compared it with a model based on primary screening with FIT only. Results Of the 1426 screening participants, 1112 (78%) completed the questionnaire and FIT. Of these, 101 (9.1%) had advanced neoplasia. The risk based model significantly increased the goodness-of-fit compared with a model based on FIT only (p50 ng/mL, 5 more cases of advanced neoplasia would be detected (net reclassification improvement 0.054, p=0.073). Conclusions Adding risk based stratification increases the accuracy FIT-based CRC screening and could be used in preselection for colonoscopy in CRC screening programmes.
doi_str_mv 10.1136/gutjnl-2013-305013
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Combining risk stratification, based on established risk factors for advanced neoplasia, with the FIT result for allocating screenees to colonoscopy could increase the sensitivity and diagnostic yield of FIT-based screening. We explored the use of a risk prediction model in CRC screening. Design We collected data in the colonoscopy arm of the Colonoscopy or Colonography for Screening study, a multicentre screening trial. For this study 6600 randomly selected, asymptomatic men and women between 50 years and 75 years of age were invited to undergo colonoscopy. Screening participants were asked for one sample FIT (OC-sensor) and to complete a risk questionnaire prior to colonoscopy. Based on the questionnaire data and the FIT results, we developed a multivariable risk model with the following factors: total calcium intake, family history, age and FIT result. We evaluated goodness-of-fit, calibration and discrimination, and compared it with a model based on primary screening with FIT only. Results Of the 1426 screening participants, 1112 (78%) completed the questionnaire and FIT. Of these, 101 (9.1%) had advanced neoplasia. The risk based model significantly increased the goodness-of-fit compared with a model based on FIT only (p&lt;0.001). Discrimination improved significantly with the risk-based model (area under the receiver operating characteristic (ROC) curve: from 0.69 to 0.76, (p=0.02)). Calibration was good (Hosmer-Lemeshow test; p=0.94). By offering colonoscopy to the 102 patients at highest risk, rather than to the 102 cases with a FIT result &gt;50 ng/mL, 5 more cases of advanced neoplasia would be detected (net reclassification improvement 0.054, p=0.073). Conclusions Adding risk based stratification increases the accuracy FIT-based CRC screening and could be used in preselection for colonoscopy in CRC screening programmes.</description><identifier>ISSN: 0017-5749</identifier><identifier>EISSN: 1468-3288</identifier><identifier>DOI: 10.1136/gutjnl-2013-305013</identifier><identifier>PMID: 23964098</identifier><identifier>CODEN: GUTTAK</identifier><language>eng</language><publisher>England: BMJ Publishing Group LTD</publisher><subject>Age ; Aged ; Algorithms ; Colonoscopy ; Colorectal cancer ; Colorectal Neoplasms - diagnosis ; Colorectal Neoplasms - etiology ; Decision Support Techniques ; Early Detection of Cancer - methods ; Family medical history ; Feces - chemistry ; Female ; Health risk assessment ; Humans ; Logistic Models ; Male ; Middle Aged ; Multivariate Analysis ; Participation ; Population ; Questionnaires ; Risk Assessment ; Risk Factors ; ROC Curve ; Studies ; Surveillance ; Surveys and Questionnaires ; Tumors ; Women</subject><ispartof>Gut, 2014-03, Vol.63 (3), p.466-471</ispartof><rights>Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions</rights><rights>Copyright: 2014 Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b369t-612f4524d993226f047529016266dca7c4b9e2a52c05454d2a6c2449bf7a90ce3</citedby><cites>FETCH-LOGICAL-b369t-612f4524d993226f047529016266dca7c4b9e2a52c05454d2a6c2449bf7a90ce3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttp://gut.bmj.com/content/63/3/466.full.pdf$$EPDF$$P50$$Gbmj$$H</linktopdf><linktohtml>$$Uhttp://gut.bmj.com/content/63/3/466.full$$EHTML$$P50$$Gbmj$$H</linktohtml><link.rule.ids>114,115,315,781,785,3197,23576,27929,27930,77605,77636</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23964098$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Stegeman, Inge</creatorcontrib><creatorcontrib>de Wijkerslooth, Thomas R</creatorcontrib><creatorcontrib>Stoop, Esther M</creatorcontrib><creatorcontrib>van Leerdam, Monique E</creatorcontrib><creatorcontrib>Dekker, Evelien</creatorcontrib><creatorcontrib>van Ballegooijen, Marjolein</creatorcontrib><creatorcontrib>Kuipers, Ernst J</creatorcontrib><creatorcontrib>Fockens, Paul</creatorcontrib><creatorcontrib>Kraaijenhagen, Roderik A</creatorcontrib><creatorcontrib>Bossuyt, Patrick M</creatorcontrib><title>Combining risk factors with faecal immunochemical test outcome for selecting CRC screenees for colonoscopy</title><title>Gut</title><addtitle>Gut</addtitle><description>Objective Faecal immunochemical testing (FIT) is increasingly used in colorectal cancer (CRC) screening but has a less than perfect sensitivity. Combining risk stratification, based on established risk factors for advanced neoplasia, with the FIT result for allocating screenees to colonoscopy could increase the sensitivity and diagnostic yield of FIT-based screening. We explored the use of a risk prediction model in CRC screening. Design We collected data in the colonoscopy arm of the Colonoscopy or Colonography for Screening study, a multicentre screening trial. For this study 6600 randomly selected, asymptomatic men and women between 50 years and 75 years of age were invited to undergo colonoscopy. Screening participants were asked for one sample FIT (OC-sensor) and to complete a risk questionnaire prior to colonoscopy. Based on the questionnaire data and the FIT results, we developed a multivariable risk model with the following factors: total calcium intake, family history, age and FIT result. We evaluated goodness-of-fit, calibration and discrimination, and compared it with a model based on primary screening with FIT only. Results Of the 1426 screening participants, 1112 (78%) completed the questionnaire and FIT. Of these, 101 (9.1%) had advanced neoplasia. The risk based model significantly increased the goodness-of-fit compared with a model based on FIT only (p&lt;0.001). Discrimination improved significantly with the risk-based model (area under the receiver operating characteristic (ROC) curve: from 0.69 to 0.76, (p=0.02)). Calibration was good (Hosmer-Lemeshow test; p=0.94). By offering colonoscopy to the 102 patients at highest risk, rather than to the 102 cases with a FIT result &gt;50 ng/mL, 5 more cases of advanced neoplasia would be detected (net reclassification improvement 0.054, p=0.073). 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Combining risk stratification, based on established risk factors for advanced neoplasia, with the FIT result for allocating screenees to colonoscopy could increase the sensitivity and diagnostic yield of FIT-based screening. We explored the use of a risk prediction model in CRC screening. Design We collected data in the colonoscopy arm of the Colonoscopy or Colonography for Screening study, a multicentre screening trial. For this study 6600 randomly selected, asymptomatic men and women between 50 years and 75 years of age were invited to undergo colonoscopy. Screening participants were asked for one sample FIT (OC-sensor) and to complete a risk questionnaire prior to colonoscopy. Based on the questionnaire data and the FIT results, we developed a multivariable risk model with the following factors: total calcium intake, family history, age and FIT result. We evaluated goodness-of-fit, calibration and discrimination, and compared it with a model based on primary screening with FIT only. Results Of the 1426 screening participants, 1112 (78%) completed the questionnaire and FIT. Of these, 101 (9.1%) had advanced neoplasia. The risk based model significantly increased the goodness-of-fit compared with a model based on FIT only (p&lt;0.001). Discrimination improved significantly with the risk-based model (area under the receiver operating characteristic (ROC) curve: from 0.69 to 0.76, (p=0.02)). Calibration was good (Hosmer-Lemeshow test; p=0.94). By offering colonoscopy to the 102 patients at highest risk, rather than to the 102 cases with a FIT result &gt;50 ng/mL, 5 more cases of advanced neoplasia would be detected (net reclassification improvement 0.054, p=0.073). Conclusions Adding risk based stratification increases the accuracy FIT-based CRC screening and could be used in preselection for colonoscopy in CRC screening programmes.</abstract><cop>England</cop><pub>BMJ Publishing Group LTD</pub><pmid>23964098</pmid><doi>10.1136/gutjnl-2013-305013</doi><tpages>6</tpages></addata></record>
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source MEDLINE; BMJ Journals - NESLi2; PubMed Central
subjects Age
Aged
Algorithms
Colonoscopy
Colorectal cancer
Colorectal Neoplasms - diagnosis
Colorectal Neoplasms - etiology
Decision Support Techniques
Early Detection of Cancer - methods
Family medical history
Feces - chemistry
Female
Health risk assessment
Humans
Logistic Models
Male
Middle Aged
Multivariate Analysis
Participation
Population
Questionnaires
Risk Assessment
Risk Factors
ROC Curve
Studies
Surveillance
Surveys and Questionnaires
Tumors
Women
title Combining risk factors with faecal immunochemical test outcome for selecting CRC screenees for colonoscopy
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