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Here we focus on the conduct of validation in an independent data set.
These two large hospitals were selected because they provided a sufficient number of new CRC cases each year, and we obtained approval to access patient medical records and pharmacy production data from the regions where these hospitals are located for the conduct of validation studies.
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This first attempt to validate a review of reasons leads to four crucial methodological questions relevant to the future conduct of such validation studies: 1) How can a description of a reason be deemed incorrect?
The conduct of more validation studies and sensitivity analyses is also recommended to better understand methodological issues and sources of uncertainty (Chatterjee and Wacholder 2002; Greenland 1996; Rosenbaum 2005; Schneeweiss 2006; VanderWeele and Arah 2011).
A central reference laboratory in Johannesburg, Republic of South Africa, assisted with the conduct of cross-validation studies which included the selection and shipment of proficiency panels of 60 samples from the reference centre to the sites for biochemistry, hematology and urinanalysis.
A parametric study of several key input parameters is conducted for validation of the developed CL model.
The comparison between the multiphase CPFE model, experiments, and two phenomenological models (isotropic von Mises and anisotropic Hill'48 yield criteria) was conducted for validation of the proposed model.
Experiments on high-speed WEDM (DK7725B) are conducted for validation of nonlinear relationship between the design variables (i.e., workpiece thickness, peak current, on-time and off-time) and the responses (i.e., material removal rate and surface roughness).
Validity was evaluated by conducting three types of validation analyses: factor, construct and longitudinal.
To test the effectiveness of AutoEPG we have conducted a series of validation steps.
To assess the impact of such factors, we conducted a series of validation analyses in the largest sample (sample 2, n = 102).
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CEO of Professional Science Editing for Scientists @ prosciediting.com