The associated R2 value was 0.31, indicating that offender connectivity had a medium sized effect on offending rates.
The analysis found that psychosocial interventions had medium-size effects on both pain severity and interference, and suggested that such interventions should be a part of a multimodal approach to the management of pain in patients with cancer [ 16].
While the difference in their scores was statistically significant, the effect size (d = 0.4) reflected only a medium-size effect of item context on students' application of scientific explanations for natural selection.
However, these small to medium sized effects [ 33], were based on only 3 studies with 254 patients, and 2 studies with 103 patients randomised respectively.
In order to detect a medium sized effect (d = 0.5) on BMI [ 63], using a power of.90, a significance level of.05, and being able to test interaction effects between participants with a low, medium, and high level of education, about 1,000 participants need to complete the study.
20 A third study used a no intervention control, and found small to medium sized positive effects on self reported activity, which were significant for continuous (frequency of exercise sessions) but not dichotomous data (proportion of participants who had become more active from study entry).
The power analysis was based upon a previous meta-analysis on the effects of MBSR on psychological well-being variables, showing a mean medium-sized effect size (d = 0.5).
Co-culture of cancer cells with trigeminal neurons enhanced sustained ATP current in medium sized neurons, with no effect on transient ATP current (i.e. P2X3 receptors).
The study was powered to detect a medium effect size on the primary study outcome measures of 0.5 units of standard deviation with 79% probability if the intraclass correlation coefficient within schools was 0.10 and with 90% probability for a coefficient of 0.06 for each primary outcome measure.
This sample is also large enough to detect medium sized clinically relevant intervention effects on the secondary outcome EORTC QLQ-C30 subscales.
They detected a medium effect size on kinetic changes during stance at a p = 0.05 and power = 80%, and estimated sample size was 5 children per group.
