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Testing Normality of Data using SAS
The first step of data analysis usually involves making distributional assumption about the data. If the data is considered truly a sample from some classes of probability distributions, we cannot only summarize the data compactly based the approximate distribution, but also carry out proper statistical procedures to gain valuable inferences.
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Excellent Ways of Exporting SAS Data to Excel
lexjansen.comINTRODUCTION With the introduction of SAS 9, there now exists a plethora of options for exporting data to Microsoft Excel. What used to be a laborious task can now be reduced to several lines of code. Of course, not everyone is currently at SAS 9, nor is everyone using SAS in a Windows environment. In these cases the options are more limited.
A Step-by-Step Guide to Survival Analysis
lexjansen.comINTRODUCTION Survival analysis is the phrase used to describe the analysis of data in the form of times from a well-defined ... There are three important SAS procedures available for analyzing survival data: LIFEREG, LIFETEST and PHREG (BPHREG). PROC LIFEREG is a parametric regression procedure for modeling the distribution of ... Categorical ...
Define-XML v2 – What's New - Lex Jansen
lexjansen.comPhUSE 2013 2 OPERATIONAL DATA MODEL The Define-XML standard is based on the CDISC Operational Data Model (ODM) XML schema [6]. The new Define-
Hierarchical Logistic Regression with SAS GLIMMIX
lexjansen.comHierarchical Logistic Regression Modeling with SAS GLIMMIX Jian Dai, Zhongmin Li, David Rocke University of California, Davis, CA ABSTRACT Data often have hierarchical or clustered structures, such as patients clustered within hospitals or students nested
Illustrative Logistic Regression Examples using PROC ...
lexjansen.comsensitivity). These pairs constitute the Receiver Operating Characteristic (ROC) curve. Points far above the 45 degree line are desirable and one hopes to have this curve rise as quickly as possible from the origin. The 45 degree line in the unit square would correspond to an area under the curve (AUC) of 0.5
Data Transfer from Microsoft Access to SAS Made Easy
lexjansen.comPaper CC12 Data Transfer from Microsoft Access to SAS Made Easy Zaizai Lu, AstraZeneca Pharmaceutical David Shen, ClinForce Inc. ABSTRACT
Using and Understanding LSMEANS and LSMESTIMATE
lexjansen.comusing the STORE statement and PROC PLM to test hypotheses without having to redo all the model calculations. This material is appropriate for all levels of SAS experience, but some familiarity with linear models is assumed. INTRODUCTION . In a linear model, some of the predictors may be continuous and some may be discrete. A continuous predictor is
The Automatic Detection of Problems in the SAS Log
lexjansen.comThe Automatic Detection of Problems in the SAS Log MaryAnne D. Hope, Health Services Advisory Group, Phoenix, Arizona ABSTRACT There are numerous types of errors generated from a SAS® run, some obvious, others not so obvious.The red
Hyperlinks and Bookmarks with ODS RTF - Lex Jansen
lexjansen.com1 Paper TT21 Hyperlinks and Bookmarks with ODS RTF Scott Osowski, PPD, Inc, Wilmington, NC Thomas Fritchey, PPD, Inc, Wilmington, NC ABSTRACT
How do I map that? - SDTM Implementation Challenges
lexjansen.comGuide became available in early 2009 and greatly helped the mapping exercise, even though it meant updating a ... approach would uniquely identify the location in combination with the evaluation name (--TEST/--TESTCD). However, this is not a completely appropriate use of the categorization of the category variables as these should be used to ...
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www.sagepub.comdata points around their mean value. It is a mathemati-cal expectation of the average squared deviations from the mean. Inferential Statistical Tests Tests concerned with using selected sample data compared with population data in a variety of ways are called inferen-tial statistical tests. There are two main bodies of these tests.
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Katz Index of Independence in Activities of Daily Living (ADL)
catch-on.orgClyde: she needs help getting out of bed and using the toilet and shower. On the positive side, she can feed and dress herself without difficulty and is con-tinent. The Katz index helps to organize these observ-ations into a clinically useful framework, yielding numeric scores that sum up a patient’s functional sta-tus.
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open.umich.eduThe!equations!for!the!estimated!slope!and!interceptare!given!by:!! ! b 1 =! b 0 =! The!leastsquares!regression!line!(estimated!regression!function)!is:!y = µˆ y (x ...