Estimation of National Colorectal-Cancer Incidence Using Claims Databases

Table 2

Algorithm 1 results by district and diagnostic year: sensitivity and positive predictive value of administrative data for identifying incident colorectal-cancer cases versus cancer registries used as the gold standard.

District	Year	Incident cases identified by Algorithm 1	Administrative data/registry discordances		Sensitivity (%) (95% CI)	PPV (%) (95% CI)
			False positives	False negatives
Côte d’Or	2004	313	69	88	73.5 (68.7–78.2)	77.9 (73.3–82.5)
	2005	333	88	68	78.3 (73.7–82.9)	73.6 (68.9–73.3)
Doubs	2005	268	70	75	72.5 (67.2–77.8)	73.9 (68.6–79.2)