It is a fact that certain research methods are more significant than others based on the capability to address respond to questions on the efficiency of interventions. It has led to the ranking of evidence, which evaluate outcome of interventions and shows, which research designs need to be given the most priority. According to Bowling and Ebrahim (2005), the Randomized Controlled Trial (RCT) is regarded to offer the most reliable evidence on the efficiency of interventions since the processes adopted during the performance of an RCT reduces the challenges associated with confounding factors that influence the outcomes. Due to this, the findings established by RCT are much closer to the appropriate impact than the findings developed by other research techniques.