The authors report that they found several studies during their literature review that reported significant differences between utilizing open and closed suction systems; however, these differences were small and clinically irrelevant. What does this statement tell you about the statistical and clinical significance of the studies in question?

Let’s look at the use of ANOVA in the following nursing research article:
Özden, D., & Görgülü, R. S. (2015). Effects of open and closed suction systems on the haemodynamic parameters in cardiac surgery patients. Nursing in Critical Care, 20(3), 118–125. doi:10.1111/nicc.12094