'Time bias' diaporamas de présentation

Biases in Studies of Screening Programs

Biases in Studies of Screening Programs. Thomas B. Newman, MD, MPH June 29, 2012. Overview. Introduction TN Biases Definitions Problems with observational studies Volunteer bias Lead time bias Length bias Stage migration bias Overdiagnosis. Screening tests: TN Biases.

520 views • 38 slides

Length Bias (Different natural history bias)

Length Bias (Different natural history bias) . Screening picks up prevalent disease Prevalence = incidence x duration Slowly growing tumors have greater duration in presymptomatic phase, therefore greater prevalence

624 views • 37 slides

Project AUGI

Project AUGI. UCF Augmented Navigation System. Motivations. To develop an improved and more open navigation experience. Make it accessible to a broad audience through Android devices. To improve upon traditional 2D maps and voice turn-by-turn navigation. What is Project AUGI?.

509 views • 36 slides

Biases in Studies of Screening Programs

Biases in Studies of Screening Programs. Thomas B. Newman, MD, MPH June 10, 2011. Overview. Introduction TN Biases Defintions Problems with observational studies Volunteer bias Lead time bias Length bias Stage migration bias Pseudodisease. Screening tests: TN Biases.

545 views • 36 slides

Helping Doctors and Patients Make Sense of Health Statistics

Helping Doctors and Patients Make Sense of Health Statistics. Supplemental Reading 2. Overview. Few understand health statistics Mammography screening recues the risk of dying from breast cancer by 25% in fact means that _____________________will die of the disease.

501 views • 35 slides

The History of the Internet

603 views • 32 slides

People Centered Planning: A Suggested Model for Central Asian countries

People Centered Planning: A Suggested Model for Central Asian countries Dr. Amitava Mukherjee Regional Advisor for Poverty Reduction United Nations Economic and Social Commission for Asia and the Pacific Some Problem Statements Unemployment is a major problem

614 views • 29 slides

Chip Helms

Examining the Sensitivity of an Idealized Model to Changes in the Initial Potential Temperature Perturbation. Chip Helms. Background. The Idealized Model: CM1. Created by George Bryan (NCAR) 3D, non-hydrostatic, non-linear, cloud-resolving, idealized model No data assimilation

300 views • 19 slides

Comparing Survival With and Without Diaphragm Pacing Jonathan Katz, Robert Miller, Dan Moore

Comparing Survival With and Without Diaphragm Pacing Jonathan Katz, Robert Miller, Dan Moore. P23. Results: Follow-up data was available for 77 patients with DPS and 258 without (190 from the Lechtzin study and 68 mino placebo).

128 views • 1 slides