A group of students from Kenyatta University are set out to undertake a case control study in Mzuri County, where a disease associated with stiffness of the spine and major joints had been reported. In the process, the researchers established that the prevalence of the disease was 24% out of the total 2800 people examined, 25% were exposed but had no disease while 280 of those not exposed had the disease Questions Describe in detail the study design giving both advantages and disadvantages. Show how the researchers arranged the various people for data collection. 10 marks