From the literature reviewed a universal definition of quality is difficult to achieve. There are as many definitions of quality as there are quality leaders, but some commonly accepted definitions of the quality pioneers and their emphasis are outlined in Table 1. The Deming approach lies in the use of data analysis tools such as control charts. His PDCA is a four-step process for quality improvement. Step 1: develop a plan to effect improvement; Step 2: carry out the plan; Step 3: observe and check effects of the plan; Step 4: study results to determine what was learned. Crosby’ concept, “do it right first time” emphasised culture change and identified areas in which quality can be improved: improving awareness; instituting teams; setting goals; giving recognition; and continuously repeating the quality improvement cycle [3, 8]. Feigenbaum divided quality costs into four categories as follows: Internal failure