18:52 Feb 10, 2020 |
English to Russian translations [PRO] Science - Mathematics & Statistics / Клинические исследования | |||||||
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| Selected response from: mk_lab Ukraine Local time: 10:10 | ||||||
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3 | оператор BY |
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by statement оператор BY Explanation: Речь идет о логическом операторе BY в языке программирования, на котором написана программа обработки результатов исследования http://www.math.wpi.edu/saspdf/stat/chap49.pdf The PHREG procedure includes four methods of handling ties. The discrete logistic model is available for discrete time-scale data. The other three methods apply to continuous time-scale data. The exact method computes the exact conditional probability under the model that the set of observed tied event times occurs before all the censored times with the same value or before larger values. Breslow and Efron methods provide approximations to the exact method. ... BY Statement BY variables; You can specify a BY statement with PROC PHREG to obtain separate analyses on observations in groups defined by the BY variables. When a BY statement appears, the procedure expects the input data set to be sorted in order of the BY variables. The variables are one or more variables in the input data set. |
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