Table 3.

Sources of lung cancer outcome information

Cohort	Vital statistics	Cause of death	Proportion of missing causes of death	Histological confirmation of lung cancer?
Czech (Tomasek et al. 2008)	Czech Population Registry at the Ministry of the Interior	Before 1982 from local death registries. After 1982 from the Institute of Health, Information and Statistics of the Czech Republic	About 0.4%	Histological confirmation on about 80% of the lung cancers
France (Vacquier et al. 2011; Rage et al. 2012)	National Directory for the Identification of Natural Persons/RNIPP	Before 1968 from administrative and medical files of Compagnie Générales des Matières Nucléaires Inc. (COGEMA). After 1968 from a standardized anonymous linkage to the French National Epidemiological Centre on Medical Causes of Death, supplemented by COGEMA medical files	About 32% before 1965; 28% from 1965  to  1969 (prior to the national mortality database); 0.8% thereafter	No histology
Beaverlodge (Lane et al. 2010)	Deaths are registered by the province/territory, where the event occurred and are sent to Statistics Canada	1950–1999 from the Canadian national mortality database. This database contains records of all deaths registered in Canada and voluntarily reported deaths of Canadian residents occurring in the United States	About 1% or less	Lung cancer histology was available for workers with lung cancer incidence records