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The Kaplan–Meier estimator, [1] [2] also known as the product limit estimator, is a non-parametric statistic used to estimate the survival function from lifetime data. In medical research, it is often used to measure the fraction of patients living for a certain amount of time after treatment. In other fields, Kaplan–Meier estimators may be ...
Logrank test. The logrank test, or log-rank test, is a hypothesis test to compare the survival distributions of two samples. It is a nonparametric test and appropriate to use when the data are right skewed and censored (technically, the censoring must be non-informative). It is widely used in clinical trials to establish the efficacy of a new ...
Survival analysis is a branch of statistics for analyzing the expected duration of time until one event occurs, such as death in biological organisms and failure in mechanical systems. This topic is called reliability theory or reliability analysis in engineering, duration analysis or duration modelling in economics, and event history analysis ...
Kaplan, Inc. Kaplan, Inc. is an international educational services company that provides educational and training services to colleges, universities, businesses and individuals around the world. Founded in 1938 by Stanley Kaplan, [2] the company offers a variety of test preparation, certifications, and student support services. [1]
Kaplan University ( KU) was a private online for-profit university owned by Kaplan, Inc., a subsidiary of Graham Holdings Company. It was predominantly a distance learning institution, maintaining 14 ground locations across the United States. The university was named in honor of Stanley H. Kaplan, [3] who founded Kaplan Test Prep. [4]
Kaplan or Caplan is also a surname common among Ashkenazi Jews, usually indicating descent from the priestly lineage (the kohanim ), similar to the etymological origin of the common Hebrew surname Cohen. One of the earliest modern records of Kaplan as a family name is that of Abraham Kaplan in 1698.
Gabriel Weston Kaplan (born March 31, 1945) is an American actor, comedian, and professional poker player. He played the eponymous teacher in the 1970s sitcom Welcome Back, Kotter . He later became a professional poker player and a commentator for the series High Stakes Poker on PokerGO .
Edward Lynn Kaplan was born in Philadelphia, Pennsylvania, on May 11, 1920. [3] His parents were Eugene V. Kaplan (1887–1977) and Frances Rhodes Kaplan (1891–1978). He graduated from Swissvale High School in Swissvale, Pennsylvania, in 1937. He attended the Carnegie Institute of Technology from 1937 to 1941 and graduated with a bachelor's ...
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