compare the types of survivorship curves you would expect to find in human populations in industrialized countries with good health care versus African countries with a high mortality rate from HIV.
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compare the types of survivorship curves you would expect to find in human populations in industrialized countries with good health care versus African countries with a high mortality rate from HIV.
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- In a cohort study, the ratio of the incidence rate of a disease in an exposed group to the incidence rate of the disease in a nonexposed group is the: a. Relative risk b. Risk difference c. Prevalence ratio d. Odds ratioWhich statistic below is the best example of incidence of a disease? A) In 2005, 2 million people died from HIV B) A total of 40 million people have died from HIV infection C) In 2005, 4 million people acquired HIV D) A total of 65 million people have gotten HIV E) 25 million people currently suffer from HIV infectionIn the SIR model, if S is 99 and I is 1 (total population is 100) at the beginning of a disease infection, which has R0 of 2 and average infectious period of 10 days. What is the transmission rate (beta)? a.0.1 b.0.2 c.0.002 d.2 Please answer asap
- Does this epidemic curve suggest a point source or propagated epidemic? Justify your answer. What does the "moving averages" (black line) represent? bruefly explain this term in relation to the concept of "variability"?In the SIR model, if S is 99 and I is 1 (total population is 100) at the beginning of a disease infection, which has R0 of 2 and average infectious period of 10 days. What is the transmission rate (beta)? a.0.1 b.0.2 c.0.002 d.2using the population growth pyramids of italy and uganda,explain why the death toll of italy was very high if the disease affect the aged in the community?
- Calculate the R0 for a susceptible population of 8,500 people for a disease with a transmission rate of 0.00004 and an infectious period of 6 days. Note that 1,000 of the people in this population have been vaccinated for this disease. R0= SβL Group of answer choices 2.04 1.80 2.28 1.42 0.64refer to the provided image 80. Which of the following is represented by the x-axis of the provided epidemic curve?A. Asymptomatic timeB. Generation time C. Incubation periodD. Natural history 81. What type of epidemic is evident on the given epidemic curve?A. IntermittentB. Point-source C. ProgressiveD. PropagatingCircle type of the study design below indicated. An investigator takes a sample of healthy individuals, record their ongoing solar exposure, and relate that to the subsequent occurrence of skin cancer in the same group. Case-control study Ecological study Cohort study Cross-sectional study
- How do scientists use epidemiological transitions to understand how health has changed throughout human history? A. They can be used to describe long-term shifts and patterns observed in health and disease profiles of populations. B. They can be used to describe short-term shifts and patterns observed in health and disease profiles of populations. C. Epidemiological transitions cannot be used to understand how health has changed throughout human history. D. None of the aboveUse your knowledge of population growth models to evaluate the spread of Covid-19 in the world population. How would you characterize this type of growth? Consider growth the increase/decrease in the number of cases per a certain amount of time (day or week).Which of the following epidemiological study designs is the most useful to study incidence of an outcome or a disease? a. Ecological study b. Cross-sectional study c. Cohort study d. Descriptive study