Biostatistics Essay Example | Topics and Well Written Essays - 1250 words

Biostatistics - Essay ExampleFrom our calculation, our betting odds proportionality is skewed in nature and therefore it is not possible to make a direct calculation of the standard error. We put one over a 95% confidence level and the population odds dimension for heart disease associated with smokers lies inwardly 1.21 (an increased odd of 1.21 fold) and 1.99 (an increased odd of 1.99) fold. When a confidence interval does not include the evaluate of 1, we know that the odds of the measured outcome are different for some(prenominal) attributes even without a importee test. In this case, the confidence interval does not contain value 1.0, hence there is signifi batht linkup between smoking and heart disease.The Odds ratio is 1.55, the smokers are having 1.55 times more risk of exposure of having heart disease on the other hand, the risk ratio is 1.2939, means for smokers there is 29.39% more casualty to having risk of heart disease. Both the confidence intervals do not co ntain the value 1, hence the results of both Odds ratio and risk ratio are significant.Observe that for both Odds ratio and Risk ratio, the p value is 0, hence both the measures are equally significant. The odds ratio value is skewed and therefore it is not possible to directly calculate the standard error of the statistics. The no difference value for this statistics is 1 and therefore when a confidence interval includes the value of 1, we know that the odds of the measured outcome are the same even without a significance test.To evaluate the p value, we can hire the chi-square approach but in this case, it is not appropriate therefore it would be proper to use Fishers exact solution. Odds ratio is preferred in case of a nested control study because it is an efficient method of analysis in terms of both time and cost. It to a fault makes it possible to investigate a wide range of possible risk factors. Odds ratio is also particularly suitable to investigate rare diseases with a lo ng induction period. Odd ratio is also preferred because it a