Email: bbcnoun@gmail.com Whatsapp: 08131667008 PHY813 Question: In prospective studies, Answer: [D] cohorts are human subjects without past medical records Question: Epidemiology is the study of Answer: [B] of factors that affect distribution and determinants of a disease or a health condition in a human population. Question: All these are the main types of bias errors except Answer: [D] data bias Question: Clinical trial is preferred to clinical experiment because Answer: [C] the latter may connote disrespect for the value of human life. Question: Nationwide counting of population is termed......... Answer: [D] census Question: All the following are false characteristics of experimental study except Answer: [A] The researcher has control over the variables. Question: The three major types of observational epidemiologic studies are these except Answer: [A] cyclical Question: The main problem that may be faced when collecting data is Answer: [C] selection of appropriate collection methods and in training staff involved Question: An clinical experiment testing medical treatments on human subjects is called Answer: [D] clinical trial Question: What are the two (2) types of data Answer: [B] Numerical data and Non-numeric data Email: bbcnoun@gmail.com Whatsapp: 08131667008