The phrase "achieved power of" is correct and usable in written English.
It can be used when discussing the attainment of influence, control, or authority in a particular context.
Example: "After years of hard work and dedication, she finally achieved power of her department, leading her team to new heights."
Alternatives: "gained control of" or "attained authority over".
Due to the statistical characteristics of an interim analysis, the achieved power of this study would be unnecessarily reduced.
Post hoc power analysis for the main results (subjective health status) revealed an achieved power of 0.92 for the obtained interaction effect.
The achieved power of the analysis was analyzed post-hoc with G*Power 3.1.4 [ 61] to see how likely we were to detect a Pseudonocardia phylotype effect given the substantial variation between colonies and our sample sizes.
The post hoc power analysis of the ANOVA used in the Tukey's HSD revealed an effect size of 0.29 giving an achieved power of 0.69 to determine a significant difference between the means of RMR by altitude within each mountain.
For the reliability analysis, we estimate that we have achieved power of 80% to detect an ICC of 0.9 under the alternative hypothesis (which is the approximate value for CRIS subscale ICCs), when the ICC under the null hypothesis is 0.81, using an F-test with alpha = 0.05, and two samples of 50 persons each [ 25].
Among genes with maximum achieved power of greater than 40% for at least one of the tests, weighting was advantageous for the ARNT gene, whereas collapsing yielded higher power for FLT1 and PRKCA, which both contained common causal SNPs.
Our proposed sample size of 278 per group is sufficient to achieve power of 75%, at the 5% significance level.
For individual site analyses, assuming an effect size of 0.7, a sample of 100 per site would be needed to achieve power of 0.82.
Third, to achieve power of 80% and an alpha error of 0.05, the sample size of each group should be 36.
To detect a true difference in means between groups of 2%, we will need 132 participants per group to achieve power of 0.9 and p = 0.05.
For this study's sample size (N = 49), alpha = 0.05, and a standardized effect size (d = 0.41), a two-tailed, paired-samples t test will achieve power of 80%.
