A Suitable Approach to Estimate Cancer Incidence in Area without Cancer Registry

Table 1

Registry data and PMSI data used for estimations of the ratio in 2004. Validation steps of prediction of incidence using each algorithm.

	Registry data		PMSI data		Validation steps
Cancer site	Number of Départements	Observed cases	Algorithm	Extracted cases	Number of Départements with ratio <1	Département effect	Cross-Validation
							PE^1	𝜒^22
Colon-Rectum
Men	8	2,009	1	2,660	0	No	0	0
			2	1,850	7	Yes	0	2
Women	8	1,625	1	2,042	0	No	0	0
			2	1,373	7	Yes	2	1
Breast
Women	6	3,946	1	4,624	0	No	0	0
			2	4,037	2	No	2	0
Ovary
Women	6	390	1	529	0	No	NA^3	NA
			2	383	3	No	NA	NA
Kidney							NA	NA
Men	8	657	1	786	0	No	NA	NA
			2	573	7	No	NA	NA
Women	5	231	1	284	0	No	NA	NA
			2	202	3	No	NA	NA

¹Prediction error: number of registries presenting a statistically significant difference between observed and predicted cases by age group.
²χ²: Number of registries presenting a statistically significant difference between total observed and total predicted cases predicted.
³Not applicable.