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SAS analysis of covariance example - University of Idaho

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SAS analysis of covariance example - University of Idaho

/* SAS program for analysis of covariance, with one */ /* factor and one covariate. Data are from example */ /* 16.1, p. 1012 in the text. Response Y is plant */

http://www.webpages.uidaho.edu/~brian/sas_analysis_of_covariance_example.pdf

Date added: September 28, 2012 - Views: 41

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Topic 13. Analysis of Covariance (ANCOVA, 13. 1. Introduction

The analysis of covariance (ANCOVA) is a technique that is occasionally useful for improving the precision of an experiment. ... 13.2.5 Using SAS for regression analysis PROC GLM can be used for regression analysis, as seen before when we discussed

http://www.plantsciences.ucdavis.edu/agr205/Lectures/2011_Lectures/L13_ANCOVA.pdf

Date added: February 14, 2012 - Views: 36

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198-30: Guidelines for Selecting the Covariance Structure in ...

Paper 198-30 Guidelines for Selecting the Covariance Structure in Mixed Model Analysis Chuck Kincaid, COMSYS Information Technology Services, Inc., Portage, MI

http://www2.sas.com/proceedings/sugi30/198-30.pdf

Date added: March 11, 2012 - Views: 22

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Analysis of Covariance (ANCOVA) - Statistics Hell

Analysis of Covariance (ANCOVA) Some background ANOVAcanbe!extendedtoinclude!one!or!more!continuous!variables!that!predict!the!outcome!(or!dependent! variable).!Continuous!variables!such!as!these,!that!are!not!part!of!the!main!experimental!manipulation!but!have!an!

http://www.statisticshell.com/docs/ancova.pdf

Date added: February 17, 2012 - Views: 69

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Analysis of Covariance - B W Griffin

Since analysis of covariance involves both analysis of variance and regression analysis, we can do an ANCOVA using multiple regression. ... not available on SAS or SPSS, we consider an alternative analysis that does shed some light.

http://www.bwgriffin.com/gsu/courses/edur8132/notes/Stevens_2007_ANCOVA_chapter.pdf

Date added: May 17, 2012 - Views: 24

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SAS/STAT 9.22User’s Guide Introduction to Analysis of ...

Thus the procedures for general analysis of variance in SAS/STAT are considered to be those that can fit statistical models containing factors, ... NESTED performs analysis of variance and analysis of covariance for purely nested random models.

http://support.sas.com/documentation/cdl/en/statugvariance/63790/PDF/default/statugvariance.pdf

Date added: April 10, 2012 - Views: 7

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Lecture 32 Analysis of Covariance II - Purdue University

Analysis of Covariance II STAT 512 Spring 2011 Background Reading KNNL: Chapter 22 . 322 Topic Overview ... (cashoffers_ancova.sas) • Y is offer made by a dealer on a used car • Factor 1 is the age of person selling the car (young, middle, elderly)

http://www.stat.purdue.edu/~ghobbs/STAT_512/Lecture_Notes/ANOVA/Topic_32.pdf

Date added: October 10, 2012 - Views: 8

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SAS/STAT 9.2 User's Guide: Introduction to Analysis of ...

SAS/STAT ® 9.2 User’s Guide Introduction to Analysis of Variance Procedures (Book Excerpt) SAS® Documentation

http://support.sas.com/documentation/cdl/en/statugvariance/61753/PDF/default/statugvariance.pdf

Date added: August 22, 2011 - Views: 14

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THE USE OF RANK ANALYSIS OF COVARIANCE IN ANALYZING CENSORED ...

THE USE OF RANK ANALYSIS OF COVARIANCE IN ANALYZING CENSORED SURVIVAL DATA Robert F. Woolson, Peter A. Lachenbruch and Saeid B. Amini, University of Iowa

http://www.sascommunity.org/sugi/SUGI83/Sugi-83-152%20Woolson%20Lachenbruch%20Amini.pdf

Date added: December 12, 2012 - Views: 11

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SUGI 26: A Macro Program for ANOVA or ANCOVA, Using PROC GLM ...

Two-way Analysis of Variance (ANOVA) and Analysis of Covariance (ANCOVA) are the two most commonly ... The most common SAS procedures to conduct ANOVA or ANCOVA are PROC GLM and PROC MIXED models. The paper introduces a macro program which enables the user to choose between PROC GLM and PROC MIXED,

http://www2.sas.com/proceedings/sugi26/p208-26.pdf

Date added: October 24, 2011 - Views: 21

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Statistics 2: ANOVA and Regression - SAS

Regression Using Indicator Variables and Analysis of Covariance • using and interpreting indicator variables in the REG procedure • building and interpreting analysis of

http://www.sas.com/offices/europe/uk/education/courses/pdf/st292.pdf

Date added: March 13, 2013 - Views: 19

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Using SAS® Software to Check Assumptions for Analysis of ...

Using SAS® Software to Check Assumptions for Analysis of Covariance, Including Repeated Measures Designs Richard P. Steiner, The University of Akron, Akron, OH

http://www.sascommunity.org/sugi/SUGI94/Sugi-94-182%20Steiner%20Wineman.pdf

Date added: October 22, 2011 - Views: 32

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Analysis of Covariance (ANCOVA)

More Statistics& SAS Tutorial at http://www.LittleDumbDoctor.com 4 treatments, 8 e.u. per treatment Obs trt x y 1 c ... Analysis of Covariance (ANCOVA) Author: Kathryn Hanford Subject: Analysis of Covariance (ANCOVA) Keywords:

http://www.littledumbdoctor.com/index_files/Mixed_model_notes_4_analysis%20of%20covariance.pdf

Date added: August 10, 2013 - Views: 6

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Non-Parametric Analysis of Covariance - JSTOR

Non-parametric Analysis of Covariance Stuart G. Young and Adrian W. Bowman Department of Statistics, University of Glasgow, Glasgow G12 8QW, Scotland SUMMARY An analysis of covariance model where the covariate effect is assumed only to be smooth is

http://www.jstor.org/stable/2532993

Date added: May 30, 2013 - Views: 6

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Rank Analysis of Covariance: Alternative Approaches - JSTOR

Rank Analysis of Covariance: Alternative Approaches ANDREW LAWSON Inveresk Research International Ltd, Inveresk Gate, Musselburgh EH21 7UB Abstract: Alternative methods of rank ANCOVA are reviewed with regard to power and efficiency properties.

http://www.jstor.org/stable/2987939

Date added: January 6, 2013 - Views: 2

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NParCov3: A SAS/IML Macro for Nonparametric Randomization ...

4 NParCov3: Nonparametric Randomization-Based Analysis of Covariance in SAS/IML was to compare the rates of cerebral vasospasm between treatments that occurred following

http://www.jstatsoft.org/v50/i03/paper

Date added: December 30, 2012 - Views: 3

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Covariance Estimations - Jason Hsu

See the SAS IML Introduction document for a guide on linear algebra computation in SAS. Sample Covariance Matrix Σ = 1 −1 ... Without relying on any theoretical assumption, principal component analysis (PCA) can be used to determine the underlying drivers of the stock returns.

http://www.jasonhsu.org/uploads/1/0/0/7/10075125/covariance_estimations.pdf

Date added: May 6, 2013 - Views: 1

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Analysis of covariance: tips and tricks using PROC GLM

Intro to Analysis of Covariance (ANCOVA) • Analysis of Covariance (ANCOVA) put into a single, coherent package, Analysis of Variance and Linear Regression.

http://bias-it.org/presentazioni/Data_handling_and_rep/1_Cavuto.pdf

Date added: July 12, 2014 - Views: 1

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Week 15 Lecture: Analysis of Covariance - OIT News and ...

1 Week 15 Lecture: Analysis of Covariance Analysis of Covariance (ANCOVA) is a technique that combines ANOVA and regression. The idea behind ANCOVA is to include a quantitative variable (called a covariate or concomitant

http://faculty.sfasu.edu/cobledean/Biostatistics/Lecture15/ANCOVA.PDF

Date added: November 24, 2011 - Views: 31

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Analysis of Covariance - Louisiana State University

In SAS we can fit our own indicator variable in proc reg, building dummy variables in the data step. However, if there are more than just two levels ... Analysis of Covariance is the combination of quantitative variables and categorical variables.

http://www.stat.lsu.edu/faculty/geaghan/EXST7015/Spring2011/PDF/16%20Multiple%20Regression%20-%20ANCOVA.pdf

Date added: August 10, 2013 - Views: 4

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Chapter 16 Repeated Measures - Cornell University

Chapter 16 Repeated Measures Introduction Repeated measures analysis deals with response outcomes measured on the same experimental unit at different times or under different

http://ciser.cornell.edu/sasdoc/saspdf/analyst/chap16.pdf

Date added: March 8, 2013 - Views: 8

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Path Analysis Using PROC CALIS SAS Code - CU-Boulder ...

Path Analysis Using PROC CALIS SAS Code: /* file ~carey/p7291dir/pathreg2.sas Example of using PROC CALIS to perform multivariate ... Path Analysis on the Interest Data set using PROC CALIS Covariance Structure Analysis: Pattern and Initial Values

http://psych.colorado.edu/~carey/Courses/PSYC7291/handouts/pathcalis.pdf

Date added: September 8, 2013 - Views: 1

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Analysis of Covariance.ppt - University of Texas at Arlington

Analysis of CovarianceAnalysis of Covariance ANCOVA Chapter 11. ANOVA Terminology ... Check homogeneity of variance ifCheck homogeneity of variance if you have a between subjects factor. The null hypothesis is that the groups have equal variance.

http://wweb.uta.edu/faculty/ricard/Classes/KINE-5305/ANCOVA/Analysis%20of%20Covariance.pdf

Date added: March 15, 2012 - Views: 20

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Applications of GEE Methodology Using the SAS System

Applications of GEE Methodology Using the SAS ... independence case, but the covariance structure of the correlated measurements must also be modeled. ... GEE Analyses Analysis objectives PROC GENMOD set-up Results and interpretation References

http://www.nesug.org/Proceedings/nesug97/stat/stokes.pdf

Date added: May 7, 2012 - Views: 10

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Creating a Propensity Score using SAS EG DRAFT

Propensity score analysis can be used for counterfactual models ... ways, such as weighting, matching, analysis of covariance, or stratification. ... Microsoft Word - Creating a Propensity Score using SAS EG DRAFT

http://www.scsug.org/SCSUGProceedings/2011/brunner1/Creating%20a%20Propensity%20Score%20using%20SAS%20EG.pdf

Date added: October 2, 2012 - Views: 6

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A SAS Macro to Automate The Covariance Structure ...

A SAS Macro to Automate The Covariance Structure Determination in Repeated Measures Data Analysis with Mixed Procedure Don (Dongguang) Li, NCIC-CTG at Queen s University, Kingston, ON, Canada

http://www.lexjansen.com/pharmasug/2003/statisticspharmacokinetics/sp013.pdf

Date added: September 11, 2012 - Views: 4

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Analysis of Covariance (ANCOVA) or Dummy Variable Regression ...

SAS Work Shop Statistical Programs PROC GLM ... Analysis of Covariance (ANCOVA) or Dummy Variable Regression (DVR) Required Statements: CLASS or CLASSES: As in ANOVA the CLASS statement defines which variables signify qualitative groupings in the data.

http://webpages.uidaho.edu/cals-statprog/sas/workshops/glm/handout4_glm.pdf

Date added: March 22, 2014 - Views: 1

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Analysis of Covariance x

Analysis of Covariance Design of Experiments - Montgomery Section 15-3 9 Background • Consider variable x is correlated with response y • Can measure x but can’t control it (ie, block)

http://www.stat.purdue.edu/~bacraig/notes514/topic9.pdf

Date added: August 21, 2013 - Views: 3

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U SPSS: ONE WAY ANALYSIS OF COVARIANCE (ANCOVA)

USING SPSS: ONE-WAY ANALYSIS OF COVARIANCE (ANCOVA) 1. ENTERING THE DATA: For this example, we are using the HSB500 (High School and Beyond) data file.

http://oak.ucc.nau.edu/rh232/courses/EPS625/Handouts/ANCOVA/ANCOVA%20-%20Using%20SPSS.pdf

Date added: January 3, 2012 - Views: 181

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Multivariate Analyses - Cornell University

as Y variables and a multivariate analysis for the variables appears. If you have not ... raw or standardized variance can be used in the analysis. SAS OnlineDoc ... the covariance measures the tendency of two variables to linearly increase or decrease

http://ciser.cornell.edu/sasdoc/saspdf/insight/chap40.pdf

Date added: December 31, 2012 - Views: 5

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Confirmatory Factor Analysis using Amos, LISREL, Mplus, SAS ...

Factor Analysis Using Amos, LISREL, Mplus, and SAS/STAT CALIS. Working Paper. The University Information Technology Services ... Covariance Structure Analysis: Maximum Likelihood Estimation Fit Function 0.0085 Goodness of Fit Index (GFI) 0.9972

http://rt.uits.iu.edu/visualization/analytics/docs/cfa-docs/cfa.pdf

Date added: September 22, 2013 - Views: 1

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Comparing the SAS GLM and MIXED Procedures for Repeated Measures

with PROC MIXED. The analysis of this example entertains models for both ... is the estimated variance covariance matrix of the data (refer to SAS Institute Inc. 1992). In contrast, PROC GLM uses the traditional ratios of mean squares to construct its F

http://www.ats.ucla.edu/stat/sas/library/mixedglm.pdf

Date added: November 5, 2011 - Views: 27

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A Step-by-Step Approach to Using SAS for Factor Analysis and ...

8 A Step-by-Step Approach to Using SAS for Factor Analysis and Structural Equation Modeling, Second Edition Instructions: ... covariance structure analysis . See confirmatory factor analysis . covariances . as COV statement parameters 136–137 .

http://www.sas.com/storefront/aux/en/spsxsfactor/61314_excerpt.pdf

Date added: June 12, 2014 - Views: 1

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Functional Data Analysis on SAS system - NESUG | Northeast ...

Functional Data Analysis on SAS system Le Yin, Lehigh University, Bethlehem, PA . ... By creating the covariance vector, we use COLVEC function to convert the matrix into a column vector in row-major order which really make our codes more efficient.

http://www.nesug.org/Proceedings/nesug10/po/po35.pdf

Date added: April 8, 2012 - Views: 20

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Topic 13: Analysis of Covariance (ANCOVA)

Topic 13: Analysis of Covariance (ANCOVA) Due Tuesday, March 11, at the beginning of lecture. Include your SAS codes, answer all parts of the questions completely, and interpret all results. To ensure maximum points for yourself, invest some time

http://www.plantsciences.ucdavis.edu/agr205/HW/2014/HW%2013/2014%20HW%2013.pdf

Date added: March 23, 2014 - Views: 2

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Analysis of Covariance (ANCOVA) - BOKU

Analysis of Covariance (ANCOVA) Covariance analysis is a kind of analysis of variance in which the data are adjusted (or controlled) for the presence of one or more other variables.

http://homepage.boku.ac.at/h505t3/SAS-Kurs/CovarianceAnalysis.pdf

Date added: January 13, 2013 - Views: 13

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The MIXED Procedure - University of Iowa

PDATA=SAS-data-set reads in covariance parameter values from a SAS data set.. The data set should con-tain the EST or COVP1–COVP n variables. ... dard PROC MIXED analysis (REML, ML, or MIVQUE0, depending upon which es-timation method you select).

http://homepage.stat.uiowa.edu/~dzimmer/spatialstats/SAS-Proc-Mixed.pdf

Date added: May 11, 2013 - Views: 12

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Statistical Analysis of Repeated Measures Data Using SAS ...

SAS FOR REPEATED MEASURES 1225 Figure 2. Compound symmetric covariance and correlation matrices and covariance parameter estimates. that provides the best fit is the appropriate one to use,

http://www.animal-science.org/content/76/4/1216.full.pdf

Date added: December 19, 2011 - Views: 46

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APPROACH OF LINEAR MIXED MODEL IN LONGITUDINAL DATA ANALYSIS ...

LONGITUDINAL DATA ANALYSIS USING SAS Pankaj Tiwari* and Gaurav Shukla *LES & IT Divison, Ivri, Izzatnagar, Bareilly E-Mail:[email protected], [email protected] ... through the specification of a covariance structure. PROC MIXED provides a useful covariance

http://jrss.in/data/56.pdf

Date added: September 29, 2014 - Views: 1

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Chapter 13 SAS Analysis of CRAC-4 Design (One Covariate)

Chapter 13 SAS Analysis of CRAC-4 Design (One Covariate) Data from Table 13.3-1 Analysis of Variance and Exploratory Data Analysis With SAS

http://www.sagepub.com/kirk/study/materials/SPSS/74455_13ds3.pdf

Date added: May 28, 2013 - Views: 4

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Analysis of Covariance

1 Design of Experiments Analysis of Covariance One of the primary goals of our modeling approach is to develop a model that adequately represents the data.

http://people.umass.edu/~bioep741/Class%20Notes/lesson%2014.PDF

Date added: August 28, 2014 - Views: 1

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Biostatistics 411 Robert Weiss http://rem.ph.ucla.edu/rob ...

Covariance Models Our choice of covariance model determines the possible variances and correlations for our data. SAS has a large number of choices for the covariance model.

http://rem.ph.ucla.edu/rob/biostat411/notes/5patternedcovariance.pdf

Date added: May 13, 2012 - Views: 4

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Using SAS Proc Mixed for the Analysis of Longitudinal Data

1 Using SAS® Proc Mixed for the Analysis of Clustered‐Longitudinal Data Kathy Welch Center for Statistical Consultation and Research

http://www.misug.org/uploads/8/1/9/1/8191072/kwelch_clustered_longitudinal_analysis.pdf

Date added: November 13, 2013 - Views: 4

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Introduction to Analysis-of-Variance Procedures

Chapter 4 Introduction to Analysis-of-Variance Procedures Overview This chapter reviews the SAS/STAT software procedures that are used for analysis

http://www.okstate.edu/sas/v7/saspdf/stat/chap4.pdf

Date added: October 24, 2012 - Views: 8

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Paper PO20 A Parameterized SAS Macro to Select an Appropriate ...

1 Paper PO20 A Parameterized SAS Macro to Select an Appropriate Covariance Structure in Repeated Measures Data Analysis Using PROC MIXED Leela Aertker, Rho, Chapel Hill, NC

http://www.pharmasug.org/proceedings/2014/PO/PharmaSUG-2014-PO20.pdf

Date added: June 5, 2014 - Views: 1

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A SAS® MACRO INCORPORATING DISCRIMINANT ANALYSIS TECHNIQUES

A SAS® MACRO INCORPORATING DISCRIMINANT ANALYSIS TECHNIQUES ... covariance matrix used in cross-validation. ... SAS performs principal component analysis with many options. We can limit the number of principal components

http://www.lexjansen.com/nesug/nesug94/NESUG94123.pdf

Date added: May 16, 2013 - Views: 4

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Analysis of incomplete two-period crossover trials with SAS ...

With SAS/STAT the standard analysis can be realized with the procedure TTEST, of course. Another option that ... of this fact by specifying the covariance matrix in the analysis accordingly. In this case, however, the Kenward-Roger

http://www.phusewiki.org/docs/2006/ST07.pdf

Date added: July 8, 2013 - Views: 4

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Principal Component Analysis on National Track Records with SAS

Principal Component Analysis on Bull Data with SAS Qiang Zhang Problem Statement: Consider the data on bulls in Table 1. ... SaleHt, and SaleWt, perform a principal component analysis using the covariance matrix S and correlation matrix R respectively.

http://www.stat.fsu.edu/~jfrade/HOMEWORKS/STA5707/STA5707-fall07/files/test2/Hwchap6-8/Principal%2520Component%2520Analysis%2520on%2520Bull%2520Data%2520with%2520SAS.pdf

Date added: October 19, 2012 - Views: 5

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Module 3: Correlation and Covariance - University of Delaware

Module 3: Correlation and Covariance Tom Ilvento Dr. Mugdim Pašiƒ University of Delaware Sarajevo Graduate School of Business Often our interest in data analysis is how two or more variables influence each other. We may be searching for a driver than helps explains sales, profits, or

http://www.udel.edu/FREC/ilvento/BUAD820/MOD3-06.pdf

Date added: January 27, 2012 - Views: 23

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Analysis of Longitudinal Data in Stata, Splus and SAS

Analysis of Longitudinal Data in Stata, Splus and SAS Rino Bellocco, Sc.D. Department of Medical Epidemiology Karolinska Institutet Stockholm, Sweden

http://www.stata.com/meeting/1nasug/bellocco.pdf

Date added: November 14, 2011 - Views: 18