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Thus, the above mentioned discrepancy between the estimated and advertised accelerometer bias values would then lead to an error level of about 5%and2.5%5% for GRACE and CHAMP, respectively, in terms of the mean non-gravitational acceleration and the derived air drag values (Eq. (2)).
All test results with an error level of 5% or less (p ≤ 0.05) were considered statistically significant.
This grid provides information about the surface of the back at an error level of <0.1 mm [ 16].
The parameter with the largest of these score statistics, when significant at an error level of 0.25, was added to the model.
Then, the k-ranks of each gene are used to calculate a statistic, and resulting probability (f-value) is used to identify the DE genes with an error level of 5%.
The total sample size calculated a priori required that 1,814 individuals be interviewed to detect a prevalence of child sexual abuse of 5% with an error level of 1% point and a 95% confidence level.
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Assuming a PR of 11% [ 13] following COH-IUI, it was calculated that 220 cycles would be required to detect an absolute 5% increase with an alpha error level of 0.05 and a beta error level of 0.2.
A power calculation indicated the need for 10 persons in each group to detect a difference of 20% in changes of proinsulin concentrations, with an α error level of 5% and a power of 80% for a two-tailed Student's t-test.
The number of persons included is large enough to detect a difference of 10% in the prevalence of a "high" number of risk alleles at an alpha error level of 5% with a statistical power of 82.7%.
At an α error level of 0.05, a statistical power (1-Beta) of 0.80, and a correlation between pre- and post-measurements found in our previous studies, 60 participants are needed in each of the two active conditions.
With an alpha error level of 5% and a sample size of 394 patients with 25(OH) D <20 ng/ml and 261 patients with 25(OH) D >20 ng/mL, the power to detect a difference in in-hospital mortality was 88%.
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