1. 
   Ascertainment
   As`cer·tain'ment noun The act of ascertaining; a reducing to certainty; a finding out by investigation; discovery. « The positive ascertainment of its limits. Burke. »
   Found op http://www.encyclo.co.uk/webster/A/127
   
   
2. 
   ascertainment
   In epidemiological and genetic research, the method by which a person, pedigree, or cluster is brought to the attention of an investigator; has a bearing on the interpretation of segregation ratios, concordance rates, linkage analysis, and other probability features. ... (05 Mar 2000) ...
   Found op http://www.mondofacto.com/facts/dictionary?ascertainment
   
   
3. 
   ascertainment
   (ă″sәr-tān´mәnt) in genetic studies, the method by which persons with a trait or disease are selected or found by an investigator.
   Found op http://www.encyclo.co.uk/local/21001
   
   
4. 
   Ascertainment
   • (n.) The act of ascertaining; a reducing to certainty; a finding out by investigation; discovery.
   Found op http://thinkexist.com/dictionary/meaning/ascertainment/
   
   
5. 
   ascertainment
   Type: Term Pronunciation: as′ser-tān′ment Definitions: 1. In epidemiologic and genetic research, the method by which a person, pedigree, or cluster is brought to the attention of an investigator; ascertainment has a bearing on the interpretation of segregation ratios, concordance ra...
   Found op http://www.medilexicon.com/medicaldictionary.php?t=7838
   
   

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