| Titre : | Validity of self-reported endoscopies of the large bowel and implications for estimates of colorectal cancer risk. (2007) |
| Auteurs : | Michael HOFFMEISTER ; Hermann BRENNER ; CHANG-CLAUDE (Jenny) : DEU. Division of Cancer Epidemiology. Unit of Genetic Epidemiology. German Cancer Research Center. Heidelberg. ; German Cancer Research Center. Division of Clinical Epidemiology and Aging Research. Heidelberg. DEU |
| Type de document : | Article |
| Dans : | American journal of epidemiology (vol. 166, n° 2, 2007) |
| Pagination : | 130-136 |
| Langues: | Anglais |
| Mots-clés : | Validité ; Autoévaluation ; Endoscopie ; Estimation ; Facteur risque ; Risque ; Dépistage ; Prévention santé ; Résultat ; Validation ; Epidémiologie ; Homme ; Intestin [pathologie] ; Appareil digestif ; Appareil digestif [pathologie] ; Cancer |
| Résumé : | [BDSP. Notice produite par INIST-CNRS nC1CPR0x. Diffusion soumise à autorisation]. Large-bowel endoscopy with removal of polyps strongly reduces colorectal cancer risk. In epidemiologic studies, ascertainment of large-bowel endoscopies often relies on self-reports and might be prone to imperfect recall. In 2003-2004, the authors assessed the validity of self-reported colorectal endoscopies in a population-based case-control study including 540 cases and 614 controls from southwest Germany and calculated odds ratios of colorectal cancer risk according to self-reports and medical records. They sought to obtain all medical records for the last self-reported endoscopy and for a subsample of 100 subjects reporting no previous endoscopy. In total, 377 of 483 records could be obtained (78%). Sensitivity of self-reports was 100%, and specificity ranged from 93% to 98% among subgroups defined by age, gender, education, family history of colorectal cancer, and case-control status. The odds ratios for colorectal cancer risk after previous colonoscopy were 0.31 (95% confidence interval : 0.21,0.45) using self-reports and 0.31 (95% confidence interval : 0.20,0.47) using medical records. However, agreement between self-reports and medical records was poor regarding type of endoscopy (colonoscopy, sigmoidoscopy, or rectoscopy ; kappa=0.22), moderate concerning polypectomy (kappa=0.58), and reasonable for year of examination (kappa=0.70). Self-reports of previous colorectal endoscopies agreed well with medical records, but validation appears to be essential with respect to details of the examination. |
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