Although case ascertainment was hospital-based, a comparison with cases ascertained by the statewide California Cancer Registry (1997 1999) shows that the NCCLS protocol successfully identified 88% of all newly diagnosed childhood leukemia cases in the San Francisco Oakland Metropolitan Statistical Area.
Cases were drawn from SEARCH (breast cancer), an ongoing population based study, with cases ascertained through the East Anglian Cancer Registry.
Cases were drawn from the Anglian Breast Cancer Study, an ongoing population-based study with cases ascertained through the East Anglian Cancer Registry [ 4].
Cases were drawn from SEARCH (breast), an ongoing population based study, with cases ascertained through the East Anglian Cancer Registry.
Breast cancer cases were drawn from Studies of Epidemiology and Risk factors in Cancer Heredity (SEARCH), an ongoing population-based case-control series, with cases ascertained through the Eastern Cancer Registration and Information Centre (ECRIC) in England, a regional population-based cancer registry.
Cases were drawn from the SEARCH (breast) collection, an ongoing population-based study of breast cancer, with cases ascertained through the Eastern Cancer Registry (formerly East Anglian Cancer Registry).
Cases were drawn from the breast and ovarian arms of the SEARCH Cancer Study, an ongoing population-based study with cases ascertained through the East Anglia and West Midlands cancer registries in the United Kingdom [ 5, 24].
In brief, data on breast cancer patients were drawn from Studies of Epidemiology and Risk factors in Cancer Heredity (SEARCH), an ongoing population-based study with cases ascertained through the Eastern Cancer Registration and Information Centre (ECRIC).
A high proportion of the cases ascertained had been diagnosed with lung cancer at a young age (Table 1); specifically 1,617 (~31%) of the cases were aged less than 60 years old at diagnosis, compared with < 10% in the general population.
Registry cases were separately compared with suspected cases ascertained from: i) administrative hospital separations records; ii) outpatient medical service claims; iii) prescription medicines claims; and iv) the 45 and Up Study baseline survey.
