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Step 1: Based on Cox's proportional hazard model with the region as a covariate, contrast test will be performed on the comparison coefficient (1, -1/2, -1/2) for the placebo group, 120 μg group, and 240 μg group at two-sided 5% significance level.
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25 The intralaboratory coefficient of variation for all PFAAs measurements was 0.1; the interlaboratory comparison coefficient of variation was 0.2 for PFOA and PFNA, 0.1 for PFOS and not applicable for PFHxA as all in the second lab measurement values were below the level of detection.
The intralaboratory coefficient of variation for both PFOA and PFOS measurements was 0.1; the interlaboratory comparison coefficient of variation was 0.2 for PFOA and 0.1 for PFOS (Frisbee et al. 2009).
For all species, the comparison correlation coefficient was of r ≥ 0.99 for the training subset and of r ≥ 0.96 for the test subset.
On the other hand, through the comparison of coefficients in Eq. (5), the most significant variables were determined.
Through the comparison of coefficients between household-level income variables and area-level income variables, one can reach some conclusions about the appropriateness of substituting an area-based measure for a missing household-level variable in a regression equation.
So, for making the comparison the absorption coefficient should be multiplied by concentration of QDs.
Figure 8 depicts the comparison of reflection coefficient results for (a=1), (b=3) and (d=5).
Fifth, the comparison of concordance coefficient between G1 and G2 might have been influenced by the dynamic range of MBF and MFR.
The problem pertaining to the comparison of the coefficient values of Trade 1 at the higher and lower quantiles is how to determine the higher and lower quantiles.
The comparison between consecutive coefficients may lead to an incorrect conclusion.
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