You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is 92. A clinical trail was conducted with 15225 hypeensive patients alloted in the intervention group (New drug) and control group (Old drug) respectively. Results of the research study are given in the following table. Calculate the absolute risk reduction (ARR) and relative risk (RR): Control group (old drug)Intervention group (new drug)Developed HT complications18001620Did not develop HT complications1342513605Total subjects1522515225 and explain in detail?
Ans. C. ARR = 1% and RR = 0.9(Ref. Park 24/e p83)In the given situation, absolute risk reduction (ARR) is 1% and relative risk (RR) is 0.9.Relative Risk (RR)Attributable Risk (AR)Population Attributable Risk (PAR)RR=IExp/INon-Exp AR=(IExp-INon-Exp)/INon-ExpX100 AR=(Total-INon-exp)/ITotalX100RR is the ratio of the risk in the exposed divided by the risk in the unexposed.AR indicates the number of cases of a disease among exposed individuals that can be attributed to that exposureIt is excess risk or risk differenceUseful measure of extent of public health problem caused by an exposure PAR indicates the number (or propoion) of cases that would not occur in a population if the factor were eliminated. Control group (old drug)Intervention group (New drug)Developed HT complications18001620Did not develop HT complications1342513605Total subjects1522515225IC = Incidence of events (hypeensive complications) in the control group = 1800/15225 = 0.118 = 11.8%IT = Incidence of events (hypeensive complications) in the treatment group = 1620/15225 = 0.106 = 10.6%Absolute risk reduction (ARR) is also known as risk difference.ARR = IC-IT = 11.8 -10.6 = 1.2%Relative risk (RR) = IT/IC = 0.106/0.118 = 0.9