Development and validation of a clinical score for predicting risk of adenoma at screening colonoscopy Journal Article

Authors: Shaukat, A.; Church, T. R.; Shanley, R.; Kauff, N. D.; O'Brien, M. J.; Mills, G. M.; Jordan, P. A.; Allen, J. A.; Kim, A.; Feld, A. D.; Zauber, A. G.; Winawer, S. J.
Article Title: Development and validation of a clinical score for predicting risk of adenoma at screening colonoscopy
Abstract: Background: Currently, no clinical tools use demographic and risk factor information to predict the risk of finding an adenoma in individuals undergoing colon cancer screening. Such a tool would be valuable for identifying those who would most benefit from screening colonoscopy. Methods: We used baseline data from men and women who underwent screening colonoscopy from the randomized, multicenter National Colonoscopy Study (NCS) to develop and validate an adenoma risk model. The study, conducted at three sites in the United States (Minneapolis, MN; Seattle, WA; and Shreveport, LA) asked all participants to complete baseline questionnaires on clinical risk factors and family history. Model parameters estimated from logistic regression yielded an area under the receiver operating characteristic curve (AUROCC) used to assess prediction. Results: Five hundred forty-one subjects were included in the development model, and 1,334 in the validation of the risk score. Variables in the prediction of adenoma risk for colonoscopy screening were age (likelihood ratio test for overall contribution to model, P < 0.001), male sex (P < 0.001), body mass index (P < 0.001), family history of at least one first-degree relative with colorectal cancer (P = 0.036), and smoking history (P < 0.001). The adjusted AUROCC of 0.67 [95% confidence interval (CI), 0.61-0.74] for the derivation cohort was not statistically significantly different from that in the validation cohort. The adjusted AUROCC for the entire cohort was 0.64 (95% CI, 0.60-0.67). Conclusion: We developed and validated a simple well-calibrated risk score. Impact: This tool may be useful for estimating risk of adenomas in screening eligible men and women. (C)2015 AACR.
Keywords: obesity; epidemiology; polyps; women; colorectal-cancer; physical-activity; multicenter; individuals; american-college; colonic neoplasia
Journal Title: Cancer Epidemiology Biomarkers and Prevention
Volume: 24
Issue: 6
ISSN: 1055-9965
Publisher: American Association for Cancer Research  
Date Published: 2015-06-01
Start Page: 913
End Page: 920
Language: English
ACCESSION: WOS:000357425200004
DOI: 10.1158/1055-9965.epi-14-1321
PMCID: PMC4452431
PUBMED: 25800242
Notes: Article -- Source: Wos
Citation Impact
MSK Authors
  1. Noah Kauff
    128 Kauff
  2. Ann G Zauber
    276 Zauber
  3. Sidney J Winawer
    244 Winawer