'Risk difference' diaporamas de présentation

Elegant Alternatives to Randomized Trials for Determining Treatment Efficacy (or Harm)

Elegant Alternatives to Randomized Trials for Determining Treatment Efficacy (or Harm). Thomas B. Newman, MD, MPH Professor of Epidemiology and Biostatistics and Pediatrics, UCSF. PASAltToRCTs forPAS 11May05.ppt. Lecture Outline. Background Instrumental variables and natural experiments

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???? ???. Association JM Last: A dictionary of epidemiology. Statistical dependence between 2 or more events, characteristics, or other variables.

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Alternatives to Randomized Trials for Determining Treatment Efficacy (or Harm)

Alternatives to Randomized Trials for Determining Treatment Efficacy (or Harm). Thomas B. Newman, MD, MPH. Clinepi2004Alt to RCTs for ATCR 3Nov04. Outline. Background Instrumental variables and natural experiments Measuring additional unrelated variables to estimate bias Propensity scores

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Measure of Disease Frequency

Measure of Disease Frequency. ??.??.?????? ?????????. Basic measurement. Risk Prevalence Incidence rate Survival Case fatality. Risk . Cumulative incidence Measure the new cases in the population

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Red Lights and Sirens: Do We Need Them?

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SAMPLE SIZE ESTIMATION

SAMPLE SIZE ESTIMATION. DR. SHRIRAM V. GOSAVI MODERATED BY: BHARAMBE SIR. FRAMEWORK. What is sample size? & Why it required? Practical issues in determining sample sizes Determining sample size Sample size calculation by different ways Sample size estimation for descriptive studies

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EPI-820 Evidence-Based Medicine (EBM)

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On the interpretation of responder analyses and NNTs

On the interpretation of responder analyses and NNTs. Stephen Senn. An apology. I will talk mainly about responder analysis I have little to say about numbers needed to treat. Genes, Means and Screens.

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STATISTICS WORKSHOP - 2

STATISTICS WORKSHOP - 2. Contingency tables Correlation Analysis of variance. Why relations between variables are important. The ultimate goal of every research or scientific analysis is finding relations between variables.

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Showing Cause, Introduction to Study Design

Showing Cause, Introduction to Study Design. Principles of Epidemiology Lecture 4 Dona Schneider, PhD, MPH, FACE. Theories of Disease Causation. Supernatural Theories Hippocratic Theory Miasma Theory of Contagion Germ Theory (cause shown via Henle-Koch postulates)

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Chapter 9

Chapter 9. Measures of Effect Revised by Susan Bailey, Ph.D. Learning Objectives. Explain absolute and relative effects Calculate measures of risk difference and etiologic fraction Discuss the role of statistical tests Apply five criteria for evaluation of epidemiologic associations.

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Acute Study of Clinical Effectiveness of Nesiritide in Decompensated Heart Failure

Acute Study of Clinical Effectiveness of Nesiritide in Decompensated Heart Failure. Adrian F. Hernandez, MD On behalf of the ASCEND-HF Committees, Investigators and Study Coordinators. Disclosure Information. Adrian F. Hernandez, MD ASCEND-HF Trial. FINANCIAL DISCLOSURE:

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Statistics for clinical research

Statistics for clinical research. An introductory course. Session 2. Comparing two groups. Previous session. Normal distribution Standard Deviation (of measurements) Standard Error (of the mean) Confidence Interval of measurements Confidence Interval of the mean. Main overview.

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Information Mastery Skills

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Statistics

Statistics. By Z S Chaudry. Why do I need to know about statistics ?. Tested in AKT To understand Journal articles and research papers. Data. Qualitative (Descriptive) Quantitative(Numeric) Discrete Continuous (range) Mean/Median/Mode Mean : Average Median : middle value of data

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Why Grade the Evidence?

Why Grade the Evidence?. target audience for Cochrane reviews clinicians interested in the question policy makers, consumers many in audience will have limitations time methodological sophistication. Implications of Limitations. limited time/sophistication

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Abstract

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Quantitative Synthesis I Interactive Quiz

Quantitative Synthesis I Interactive Quiz. Prepared for: The Agency for Healthcare Research and Quality (AHRQ) Training Modules for Systematic Reviews Methods Guide www.ahrq.gov. Binary Data.

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Methods

Results. Results. Antiretroviral Treatment Simplification to Ritonavir-boosted Protease Inhibitor Monotherapy: Systematic Review and Meta-analysis Javier Ena, Francisco Pasquau, Rosa F. Ruiz-de-Apodaca Hospital Marina Baixa. Alicante. Spain. Abstract (Updated). Methods.

127 views • 1 slides