single ascertainment

single ascertainment
a type of incomplete ascertainment in which there is no chance that any one sibship will be ascertained more than once; thus there is only one proband in each sibship, and the chance that a sibship will be ascertained is proportional to the number of its affected members.

Medical dictionary. 2011.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Ascertainment bias — In scientific research, ascertainment bias occurs when false results are produced by non random sampling and conclusions made about an entire group are based on a distorted or nontypical sample. If this is not accounted for, results can be… …   Wikipedia

  • 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… …   Medical dictionary

  • Patriot Debates — The American Bar Association passed resolutions on the USA PATRIOT Act that asked the U.S. Government to conduct a thorough review of the implementation of the powers granted to the Executive Branch under the Act before considering legislation… …   Wikipedia

  • Sampling bias — In statistics, sampling bias is when a sample is collected in such a way that some members of the intended population are less likely to be included than others. It results in a biased sample, a non random sample[1] of a population (or non human… …   Wikipedia

  • Phimosis — Classification and external resources An erect penis with a case of phimosis ICD 10 N47 …   Wikipedia

  • determination — I (New American Roget s College Thesaurus) n. resolution, will, firmness; judgment; measurement. II (Roget s IV) n. 1. [The act of determining] Syn. ascertainment, perception, measurement, resolution; see judgment 2 , 3 . 2. [Firmness of mind]… …   English dictionary for students

  • analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …   Universalium

  • Christianity — /kris chee an i tee/, n., pl. Christianities. 1. the Christian religion, including the Catholic, Protestant, and Eastern Orthodox churches. 2. Christian beliefs or practices; Christian quality or character: Christianity mixed with pagan elements; …   Universalium

  • metaphysics — /met euh fiz iks/, n. (used with a sing. v.) 1. the branch of philosophy that treats of first principles, includes ontology and cosmology, and is intimately connected with epistemology. 2. philosophy, esp. in its more abstruse branches. 3. the… …   Universalium

  • MISHPAT IVRI — This article is arranged according to the following outline: definition and terminology RELIGIOUS HALAKHAH AND LEGAL HALAKHAH common features law and morals de oraita and de rabbanan distinguishing between the two categories legal consequences of …   Encyclopedia of Judaism

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”