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BY statement

русский translation: оператор BY

18:52 Feb 10, 2020
Перевод в паре английский => русский [PRO]
Science - Математика и статистика / Клинические исследования
английский термин или фраза: BY statement
Клиническое исследование. Выполняется статистическая обработка данных.
Вот оригинал:

For each subgroup level of a factor, the HRs and associated CIs will be calculated from a Cox proportional hazards model (ties = Efron) that only contains a term for treatment. The Cox models will be fitted using SAS® PROC PHREG with the Efron method to control for ties and using a BY statement for the subgroup factor.

Вопрос:

Как понять здесь BY statement?

Благодарю заранее :)
Alexander Chernyonok
Local time: 12:41
русский переводоператор BY
Пояснение:
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.
Выбранный ответ от:

mk_lab
Украина
Local time: 12:41
Grading comment
Благодарю вас :)
За этот ответ присуждено 4 очка KudoZ



Все предложенные варианты перевода
3оператор BY
mk_lab


  

Ответы


21 мин   степень уверенности: Answerer confidence 3/5Answerer confidence 3/5
by statement
оператор BY


Пояснение:
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.

mk_lab
Украина
Local time: 12:41
Работает в области
Родные языки: русский, украинский
Очков ПРО в категории: 296
Grading comment
Благодарю вас :)
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