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  2. Hypertabastic survival models - Wikipedia

    en.wikipedia.org/wiki/Hypertabastic_survival_models

    Hypertabastic survival models were introduced in 2007 by Mohammad Tabatabai, Zoran Bursac, David Williams, and Karan Singh. This distribution can be used to analyze time-to-event data in biomedical and public health areas and normally called survival analysis.

  3. Multilevel modeling for repeated measures - Wikipedia

    en.wikipedia.org/wiki/Multilevel_Modeling_for...

    One application of multilevel modeling (MLM) is the analysis of repeated measures data. Multilevel modeling for repeated measures data is most often discussed in the context of modeling change over time (i.e. growth curve modeling for longitudinal designs); however, it may also be used for repeated measures data in which time is not a factor.

  4. SAS (software) - Wikipedia

    en.wikipedia.org/wiki/SAS_(software)

    PROC statements can also display results, sort data or perform other operations. [5] SAS macros are pieces of code or variables that are coded once and referenced to perform repetitive tasks. [8] SAS data can be published in HTML, PDF, Excel, RTF and other formats using the Output Delivery System, which was first introduced in 2007. [9]

  5. List of SAS operations - Wikipedia

    en.wikipedia.org/wiki/List_of_SAS_operations

    The SAS were tasked with assaulting 2 of the dwellings whilst Delta Force assaulted another 2 dwellings; both of Delta's and one of the SAS's target buildings were cleared without incident, but as the SAS assaulted their final dwelling the assault team were wounded by a hail of fire and an RPG-7 rocket, they returned fire and withdrew from the ...

  6. Bravo Two Zero - Wikipedia

    en.wikipedia.org/wiki/Bravo_Two_Zero

    Bravo Two Zero was the call sign of an eight-man British Army Special Air Service (SAS) patrol, deployed into Iraq during the First Gulf War in January 1991. According to Chris Ryan's account, the patrol was given the task of gathering intelligence, finding a good lying-up position (LUP), setting up an observation post (OP), and monitoring enemy movements, especially Scud missile launchers [1 ...

  7. Wilcoxon signed-rank test - Wikipedia

    en.wikipedia.org/wiki/Wilcoxon_signed-rank_test

    SAS PROC UNIVARIATE includes the Wilcoxon-Signed Rank Test in the frame titles "Tests for Location" as "Signed Rank". Even though this procedure calculates an S-Statistic rather than a W-Statistic, the resulting p-value can still be used for this test. [ 57 ]

  8. Mixed model - Wikipedia

    en.wikipedia.org/wiki/Mixed_model

    Currently, this is the method implemented in statistical software such as Python (statsmodels package) and SAS (proc mixed), and as initial step only in R's nlme package lme(). The solution to the mixed model equations is a maximum likelihood estimate when the distribution of the errors is normal. [23] [24]

  9. Newey–West estimator - Wikipedia

    en.wikipedia.org/wiki/Newey–West_estimator

    In SAS, the Newey–West corrected standard errors can be obtained in PROC AUTOREG and PROC MODEL [17] ... This page was last edited on 9 February 2025, ...