The phrase "ascertained case" is correct and usable in written English.
It can be used in contexts where a specific situation or instance has been determined or established, often in legal or formal discussions.
Example: "The court reviewed the ascertained case to ensure all evidence was properly considered."
Alternatives: "determined case" or "established case."
Because the population-based sites ascertained case probands through cancer registries, verification was necessary only for cancers reported for relatives.
Because of recruitment from the larger SEARCH study, which had ascertained case subjects diagnosed through age 19 years, the oldest of the case subjects had aged to 22 years at the time of recruitment into the SEARCH-CC study.
Ascertained case subjects were contacted and asked to complete an initial patient survey, and subjects completing the initial patient survey were invited for an in-person visit, during which anthropometric and clinical data and samples were collected.
More than one quarter of all ascertained cases in NNOs needed to be forwarded to the LPHA responsible for the cases' counties of residence.
Second, HCAR ascertained cases between 1973 and 1982.
We ascertained cases from 3,540 individuals referred clinically for comparative genomic hybridization testing from March 2007 to January 2009.
However, these studies ascertained cases of cancer among children born in the study area but diagnosed elsewhere.
Unlike other regional studies (Leck and Steward, 1972), we ascertained cases among children born in the area of interest but diagnosed elsewhere.
One potential limitation of our study is that the principal studies quantifying the risk of GBS with influenza illness ascertained cases of influenza in different ways.
This time frame is thus dependent upon the child's age of diagnosis and the years that the registry ascertained cases.
Finally, there has been no genome-wide association study using clinically ascertained cases to investigate the causes of gout in the presence of hyperuricemia.
