The outcome of randomized controlled trials can vary depending on the eligibility criteria of the patients entering into the trial. as well as the heterogeneity of the eligible population and/or the interventions. If the subject population and/or interventions are heterogeneous. the final outcome of the trial depends on the degree of concordance of effects of the subgroups of interven... https://mabelandfoxs.shop/product-category/travel-toy/