Also found in: Dictionary, Thesaurus.


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 rates, linkage analysis, and other probability features.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Editorial Note: In Georgia, ascertainment of pregnancy-related deaths improved substantially when death certificates were linked to birth records--a result also documented in other states (2,4,6).
Because of these limitations and to ensure complete case ascertainment, a comprehensive surveillance system for silicosis should employ other methods, including workers' compensation claim data, death certificate data, and direct physician reports.
The lower rate of FAS for the most recent birth years may reflect incomplete case ascertainment in those birth cohorts rather than an actual temporal decline in the rate of FAS among ANs.
The Members of the Parliament will also examine an account of the activities of the Commission on Prevention and Ascertainment of Conflict of Interest (CPACI); will vote on 3 drafts for amending the Penal Code and debate amendments to the Employment Encouragement Act.
Without summarizing the achievements and damages of Wednesday's police action in village Radusha, the general impression resulted with a defeated ascertainment. We are back in 2001 again.
For each patient whose illness met reporting criteria for inhalational anthrax, ICPs completed a case ascertainment form that provided details on the patient's demographic information and clinical symptoms.
However, differences in the prevalences of arm/hand limb reduction, encephalocele, spina bifida, or trisomy 21 (Down Syndrome) are probably not attributable to differences in ascertainment because these defects are relatively easy to diagnose.
Data were obtained from 5 sources to maximise case ascertainment: the Fetal Medicine Unit (FMU) database, stillbirth assessment records for TAH, register of the neonatal intensive care unit (NICU), Perinatal Problem Identification Program (PPIP) and registers of the emergency and neurosurgical theatres.
Findings were consistent across study design, study country, or method of alcohol ascertainment. Each additional drink per week beyond alcohol use of five or fewer drinks per week was associated with a 6 percent increase in miscarriage risk (OR, 1.06).
The programme is not confined to BISP beneficiaries, explained Dr Nishtar, adding that BISP beneficiaries are not the only ones who can get the loans but the eligibility ascertainment is rigorous.