Bouvier V, Launoy G, Herbert C, Lefevre H, Maurel J, Gignoux M. Colorectal cancer after a negative Haemoccult II test and programme sensitivity after a first round of screening: the experience of the Department of Calvados (France).
Br J Cancer 1999;
81:305-9. [PMID:
10496357 PMCID:
PMC2362867 DOI:
10.1038/sj.bjc.6990692]
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Abstract
Colorectal cancers emerging after a negative Haemoccult II are described in the context of a first round of mass screening in the Department of Calvados (France), from April 1991 to the end of December 1994. People with a cancer occurring after a negative test until 31 December 1995 were identified by a local cancer registry. Incidence was calculated and the programme sensitivity was estimated. The incidence of cancer emerging after a negative test was 57.7 per 100000, i.e. half of the calculated incidence in the reference group (141.6 per 100000). These cancers did not differ from those of either the non-responder or reference groups, in particular for the stage of extension. The programme sensitivity was globally higher than that estimated in European trials: 77.2, 66.3 and 55.9%, 1, 2 and 3 years after the test respectively. Programme sensitivity was higher for distal colon cancer 1 year after the test, which is probably due to the relatively slow growth of this subsite.
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