Table 1.

The data sources and methods used to estimate incidence rates

		Method
Source		1	2	6	7	8	9	Total
C	High-quality^a regional data (coverage <10%)			4	3			7
D	National data (rates)	2	4				1	7
E	Regional data (rates)			4	7	1		12
F	Frequency data					6	2	8
G	No data						20	20
	Total	2	4	8	10	7	23	54

NOTE: Number of countries, according to type of data source, and method used to estimate national incidence from this source.

Methods: 1, Rates projected to 2012; 2, Most recent rates applied to 2012 population; 6, Estimated as the weighted average of the local rates; 7, One regional cancer registry considered representative; 8, Rates for all cancers partitioned using relative frequency data; 9, Rates from neighboring countries or registries in the same area.

↵^aData published in “Cancer Incidence in Five Continents.”