Nursing - Bioststistics

1. The probability of occurrence of one of two or more mutually exclusive events is the sum of the probabilities of their individual occurrence Addition rule 2. The area from the ROC curve to the base: used as an indicator of the efficacy of a test in terms of sensitivity and specificity – can be used to compare performance of various tests. Area under the curve 3. Similar course of the disease process in the two regimens under comparison: also evaluated in terms of comparable bioavailability of drug products, say, within 80% to 125% with respect to area under the concentration curve and Cmax. Bioequivalence 4. The process of going into the deep of a phenomenon, data-set, thought, etc., and looking at its various components. Analysis 5. A characteristics that is assessed only in two categories such as ascites present or absent (or yes/no), or gender as male or female. Binary variable Quiz 2 1. When two or more comparisons or other statistical tests of hypothesis are done on the same set of data, the total probability of alpha error can increase much beyond the prefixed level such as 5%. This is known as "blinding". False 2. Census is the survey of the entire population. True 3. Bibliography is a list of citations of the related literature. True 4. Using computer to solve problems without understanding the implications of the underlying procedure. This is known as "black box approach". True 5. Cause-specific rate is the rate obtained when numerator is restricted to a particular cause (e.g., of morbidity or of mortality). True