How to Install R and the ‘R Commander’ - …

How to Install R and the ‘R Commander’ The ‘R Commander’ is a basic-statistics graphical user interface (GUI) for R, a free interactive programming language

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Handling date-times in R - Vanderbilt University

Handling date-times in R Cole Beck August 30, 2012 1 Introduction Date-time variables are a pain to work with in any language. We’ll discuss some of the common issues and

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Formulas & Functions in Microsoft Excel

Formulas & Functions in Microsoft Excel Theresa A Scott, MS Biostatistician III Department of Biostatistics Vanderbilt University theresa.scott@vanderbilt.edu

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Repeated Measures Design - Vanderbilt University

Repeated Measures Design Mark Conaway October 11, 1999. Common design: Repeated measures designs • Take measurements on same subject ... Analysis of Repeated Measures.

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Sample Size Planning, Calculation, and Justification

Sample Size Planning, Calculation, and Justi cation Theresa A Scott, MS Vanderbilt University Department of Biostatistics theresa.scott@vanderbilt.edu

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Non-parametric tests - Main < Vanderbilt …

Non-parametric tests When to use non-parametric methods I With correct assumptions (e.g., normal distribution), parametric methods will be more e cient / powerful than non-parametric methods but often not as much as you might

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Introduction to String Matching and Modification …

3 Here They Come... The examples in this section show the importance of using regular expressions for efficient R programming. 3.1 Please, Meet Some of the Metacharacters

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What makes a good information leaflet for patients?

This nine-point checklist is a good starting point. It highlights the key points that ensure a leaflet keeps the reader’s attention and is easily understood. It also allows you to assess how well the leaflet has been written, designed and illustrated. And it can provide a good framework for developing new written

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Power and Sample Size - Vanderbilt University

Speci c power calculation will depend on the analysis method Continuous outcome, binary predictor Percent of time below pH 4 in a treatment and control group 2-sample t-test, Wilcoxon rank sum test Binary outcome, binary predictor ... Power and Sample Size Author: Chris Slaughter, DrPH

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Fundamental Statistical Concepts in Presenting Data ...

Fundamental Statistical Concepts in Presenting Data Principles for Constructing Better Graphics Rafe M. J. Donahue, Ph.D. ... inference, inference that will stand up to scrutiny and all manners of attack. ... when trying to decide how to display our statistical data. The principles will help us discern better (and worse!) ways to show our data. ...

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Creating and Customizing the Kaplan-Meier …

Paper SP14–SAS-2014 Creating and Customizing the Kaplan-Meier Survival Plot in PROC LIFETEST in the SAS/STAT® 13.1 Release Warren F. …

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SUGI 23: A Method to Generate Kaplan-Meier and …

A Method to Generate Kaplan-Meier and Adjusted Survival Curves using SAS Bharat Thakkar, Kwan Hur, William G. Henderson, and Charles Oprian Department of Veteran affairs cooperative Studies Program Hines, IL

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A COMPARISON OF KAPLAN-MEIER AND …

Bintu N. Sherif, M.S. University of Pittsburgh, 2007. Statistical techniques such as Kaplan-Meier estimate is commonly used and interpreted as the probability of failure in time-to-event data.

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KM HR - dr-urashima.jp

Kaplan-Meier survival estimate Days after Operation 0 1000 2000 3000 0.00 0.25 0.50 0.75 1.00 Relapse free survival 図1．食道癌患者手術症例のKaplan-Meier 生存曲線

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Lecture 15 Introduction to Survival Analysis

Lecture 15 Introduction to Survival Analysis BIOST 515 February 26, 2004 BIOST 515, Lecture 15

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Association Between C-Reactive Protein and …

Advances in Peritoneal Dialysis , Vol. 21, 2005 An elevated level of C-reactive protein (CRP), which is a marker of inflammation, is a risk factor for mor-

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Non-Parametric Estimation in Survival Models

Non-Parametric Estimation in Survival Models Germ´an Rodr´ıguez grodri@princeton.edu Spring, 2001; revised Spring 2005 We now discuss the analysis of survival data without parametric assump-

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A. カプラン・マイヤー法 - JUCE

疫学概論 カプラン・マイヤー法 S.Harano,MD,PhD,MPH 5 2つの生存曲線の比較（続き） • ログランク検定logrank test – 生存数が少なくなる観察期間の後半の観察