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Observational Study Designs and Studies of Medical Tests

Observational Study Designs and Studies of Medical Tests

Observational Study Designs and Studies of Medical Tests. Michael A. Kohn, MD, MPP 25 August 2009. Outline. Single Sentence Study Description REVIEW Observational study designs Cohort, Double Cohort Case-Control Cross-sectional Studies of Medical Tests Diagnostic Test Accuracy

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1.09k views • 64 slides
Connective Tissue Oncology Society 15th Annual Meeting Miami, November 5-7th 2009

Connective Tissue Oncology Society 15th Annual Meeting Miami, November 5-7th 2009

Connective Tissue Oncology Society 15th Annual Meeting Miami, November 5-7th 2009. HISTOLOGY-SPECIFIC NOMOGRAM FOR PATIENTS AFFECTED BY PRIMARY RSTS. Alessandro Gronchi alessandro.gronchi@istitutotumori.mi.it. Prognostication. a duty for the clinician for taking decision on

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608 views • 34 slides
2/27/03 Outline

2/27/03 Outline

2/27/03 Outline. Part I: Misc. Statistical Issues Multiple comparisons in clinical trials Multiple endpoints Subgroups Adverse experience categorization Multivariate adjustment Part II: Multi-center trials and working with industry (Cummings left over). Multiple comparisons.

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429 views • 26 slides
Informative Censoring Addressing Bias in Effect Estimates Due to Study Drop-out

Informative Censoring Addressing Bias in Effect Estimates Due to Study Drop-out

Informative Censoring Addressing Bias in Effect Estimates Due to Study Drop-out. Mark van der Laan and Maya Petersen Division of Biostatistics, University of California, Berkeley. van der Laan Lab graphic: L. Co. Overview. What is informative censoring and how can it lead to bias?

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1.23k views • 23 slides
Informative Censoring Addressing Bias in Effect Estimates Due to Study Drop-out

Informative Censoring Addressing Bias in Effect Estimates Due to Study Drop-out

Informative Censoring Addressing Bias in Effect Estimates Due to Study Drop-out. Mark van der Laan and Maya Petersen Division of Biostatistics, University of California, Berkeley. van der Laan Lab graphic: L. Co. Overview. What is informative censoring and how can it lead to bias?

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451 views • 23 slides
SECTION 3 PLACARDS AND LABELS

SECTION 3 PLACARDS AND LABELS

SECTION 3 PLACARDS AND LABELS. SECTION 4 DOT EMERGENCY RESPONSE GUIDEBOOK. SECTION 5 NFPA 704 M. NFPA 704M SYSTEM. Fixed facilities only Sometimes found on individual containers in transportation Usually adopted as city ordinance but rarely enforced . RELATIVE HAZARD.

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380 views • 23 slides
Improved Propensity Matching for Heart Failure Using Neural Gas and Self-Organizing Maps

Improved Propensity Matching for Heart Failure Using Neural Gas and Self-Organizing Maps

Improved Propensity Matching for Heart Failure Using Neural Gas and Self-Organizing Maps. Leif E. Peterson, Sameer Ather , Vijay Divakaran , Anita Deswal , Biykem Bozkurt , Douglas L. Mann IJCNN, 2009 Presented by Hung-Yi Cai 2010/12/01. Outlines. Motivation Objectives Methodology

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358 views • 18 slides
Analysis of the CKR5 ?32 Genotype With Reference to the Progression of AIDS

Analysis of the CKR5 ?32 Genotype With Reference to the Progression of AIDS

Analysis of the CKR5 ?32 Genotype With Reference to the Progression of AIDS. David Ocampo 02/24/2003. Frequency of CKR5 ?32/+. Kaplan-Meier Survival Distribution Curves. Statistical Analysis of Graph B. X 2 = 8.1 df = 1 P = 0.005 Relative hazard = 0.61. Distribution Curve C.

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161 views • 7 slides
AIRE: Acute Infarction Ramipril Efficacy study

AIRE: Acute Infarction Ramipril Efficacy study

AIRE: Acute Infarction Ramipril Efficacy study. Purpose To determine whether the ACE inhibitor ramipril reduces mortality in patients with evidence of heart failure after MI Reference

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795 views • 7 slides
OBJECTIVE :

OBJECTIVE :

Figure 1. 1.0. 0.9. 0.8. 0.7. Disease Free Survival. 0.6. S S+RT. p = 0.59. 0.5. Fraction Surviving. 0.4. Overall Survival. S S+RT. p = 0.92. 0.3. 0.2. 0.1. 0.0. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Time, years.

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145 views • 1 slides

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