Estimation of National Colorectal-Cancer Incidence Using Claims Databases

Author:

Quantin C.12,Benzenine E.1,Hägi M.1,Auverlot B.1,Abrahamowicz M.3,Cottenet J.1,Fournier E.4,Binquet C.12,Compain D.1,Monnet E.5,Bouvier A. M.26,Danzon A.4

Affiliation:

1. Service de Biostatistique et d'Informatique Médicale (DIM), Centre Hospitalier Universitaire, BP 77908, 21079 Dijon Cedex, France

2. INSERM U866, Université de Bourgogne, 21000 Dijon, France

3. Department of Epidemiology and Biostatistics, McGill University, Montreal, QC, Canada H3A 1A2

4. Registre des Tumeurs du Doubs EA 3181, Université de Franche-Comté, 25000 Besançon, France

5. Service d'Hépatologie et de Soins Intensifs Digestifs, Hôpital Jean-Minjoz, 25000 Besançon, France

6. Registre Bourguignon des Cancers Digestifs, Faculte de Medecine, EPI-INSERM 0106, BP 87900, 21000 Dijon, France

Abstract

Background.The aim of the study was to assess the accuracy of the colorectal-cancer incidence estimated from administrative data.Methods.We selected potential incident colorectal-cancer cases in 2004-2005 French administrative data, using two alternative algorithms. The first was based only on diagnostic and procedure codes, whereas the second considered the past history of the patient. Results of both methods were assessed against two corresponding local cancer registries, acting as “gold standards.” We then constructed a multivariable regression model to estimate the corrected total number of incident colorectal-cancer cases from the whole national administrative database.Results.The first algorithm provided an estimated local incidence very close to that given by the regional registries (646 versus 645 incident cases) and had good sensitivity and positive predictive values (about 75% for both). The second algorithm overestimated the incidence by about 50% and had a poor positive predictive value of about 60%. The estimation of national incidence obtained by the first algorithm differed from that observed in 14 registries by only 2.34%.Conclusion.This study shows the usefulness of administrative databases for countries with no national cancer registry and suggests a method for correcting the estimates provided by these data.

Funder

Institut de Recherches et d'Expertises en Sécurité Publique

Publisher

Hindawi Limited

Subject

Public Health, Environmental and Occupational Health,Genetics,Epidemiology

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