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日期:2024-09-09
2009年12月29日 - 一般而言,不管肺癌篩檢的效益為何,基本上它有三個bias(偏差、迷誤)存在,lead time bias, overdiagnosis bias, length bias。這次,我們只講最 ......
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日期:2024-09-07
Note: Lead time and length biases reduce the utility of using increased survival time as the measure of success for a screening modality. Instead, screening ......
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日期:2024-09-06
Lead-time bias suggests that the natural history of the disease is not truly ... Length-time bias is slightly different but also suggests no benefit to screening....
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日期:2024-09-05
Selection bias is a statistical bias in which there is an error in choosing the individuals or groups to take part in a scientific study.[1] It is sometimes referred to as the selection effect. The phrase "selection bias" most often refers to the distorti...
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日期:2024-09-06
Effective Clinical Practice EDITORIAL Finding and Redefining Disease Effective Clinical Practice, March/April 1999 Primer on Lead-Time, Length, and Overdiagnosis Biases The apparent effects of early diagnosis and intervention (measured in terms of how scr...
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日期:2024-09-10
Bias is the diagonal surface direction that occurs at a 45-degree angle to the lengthwise and crosswise grains of woven fabrics. The fabric has the highest degree of stretch of any woven direction when it is cut on bias. Binding and Piping Instructions Bi...
The early detection of cancer and improved survival: More complicated than most people think « Scien
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日期:2024-09-05
The length of the arrows above represents the length of the detectable preclinical phase, from the time of detectability by the test to clinical detectability. Of six cases of rapidly progressive disease, testing at any single point in time in this hypoth...
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日期:2024-09-06
*at great length for a long period of time. (*Typically: explain ~; question someone ~; speak ~.) The lawyer questioned the witness at great length. See also: great at length 1. after some time; finally. At length, the roses bloomed, and the tomatoes ripe...