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We assumed a group difference of medium effect size between the two groups (38% versus 25%, that is, 13% differences between cesarean and vaginal delivery groups).
At this site, an 8.1%9595% CI 6.9, 9.3%) reduction in cord blood methylation with sustained prenatal smoking exposure was identified, which is in line with the median methylation difference of medium and high cotinine versus no exposure in a previous EWAS (18), which was 5.4 and 9.9%, respectively.
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We found differences of medium magnitude between RBAC compared with simple and random prioritizations in P04+HSI; and large magnitude in P04+SPY and all P05 scenarios.
We found differences of medium and large effect sizes between the opioid dependent group and the matched comparison group, suggesting that the personality traits of people with opioid dependence are in fact different from those of non-clinical peers.
Table 4 shows the age and ethnicity standardised rates for each income group, and the relative and absolute differences of medium and low compared to high income women for each cohort.
Based on four repeated measurements with within-subject correlations of.5, a sample size of 126, 42 in each condition, is necessary to achieve adequate power (.80) to trace differences of medium effect size (d =.5) between the conditions over time at a significance level of.05 [ 20].
The present study uses this design with a slight difference: instead of medium entries, base entries are used.
Many of the aspects of FSO are related to fiber optics with an important difference of transmission medium which is air/free space rather than the glass of the fiber-optic cable.
Statistical power calculations showed that the sample size allowed the detection of a difference of a medium effect size (d ≥ 0.50) at the 0.01-level with power > 0.8.
A sample-size calculation (G*Power 3.1.7; Faul, Erdfelder, Lang, & Buchner, 2007) showed that 128 participants would be needed to provide 80% power to detect a difference of 0.5 (medium effect size d) between the two groups on the primary outcome at a 5% significance level, two-tailed.
For differences of a medium effect size (f = 0.25) the power was 0.54 – 0.65 (total sample) or less.
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