title: [Does prolonging the test period improve screening for colorectal cancer?].
abstract: Prolongation of Haemoccult-screening from 3 to 6 days in 3540 out-patients resulted in a rise of the positivity rate from 4.1 to 6.75%. This was accompanied by an increase of the detection rate by 10% in cancers and 25% in large adenomas. The predictive value of a positive test for colorectal neoplasia (carcinoma and large polyps together) dropped from 26.7 to 20.9%. More data are needed before general recommendation for change from the standard 3-day-test period can be given.
authors: Deutsche Klinik für Diagnostik, Wiesbaden.
authors: P H
authors: PH
authors: Hammes
authors: R
authors: R
authors: Gnauck
mesh_terms: D003110:Colonic Neoplasms / Q000517:prevention & control*; D003111:Colonic Polyps / Q000517:prevention & control; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009780:Occult Blood; D012004:Rectal Neoplasms / Q000517:prevention & control*; D013997:Time Factors
vernacular_title: Verbessert eine Verlängerung der Testperiode das Screening nach kolorektalen Neoplasien?