Under 40% attrition, the study design will have 80% power to detect an effect size of 0.81 (assuming α=0.025) for weight loss and waist circumference reduction.
Similarly, the study may also be under-powered if the attrition rate turns out to be larger than 30%, which is the figure that has been accounted for in our theoretical sample size calculation.
To cut ten thousand jobs: Mayor Bloomberg, in the next two years — about six thousand from layoffs and four thousand through attrition — under his plan to help close the city's $3.3 billion deficit.
Passchendaele, officially known as the Third Battle of Ypres, cost 300,000 allied lives for the sake of five miles conquered during three months of attrition under the command of Field Marshal Sir Douglas Haig.
The same strategy, under the name attrition through enforcement, was at the heart of laws adopted in Arizona in 2010 and last year in Alabama, causing a furor in both states.
A mathematical model of SO2 capture by uncalcined limestone particles with solid attrition under pressurized fluidized bed combustion conditions was developed based on the shrinking unreacted-core model.
When the current density is below a limited current density (iL), the growth of grains is hindered under the mechanical attrition action and the nucleation of Ni grains processes at a high rate.
We won't know actual numbers for more than a year, but if the midrange estimate is correct, the marketplace will be enrolling substantially more people than might leave under a high attrition rate.
Therefore, further simulation studies are needed to examine the effect of attrition under several different conditions.
This was done to examine the effect of attrition under different levels of population associations between a baseline predictor and a later outcome.
