The prevalence of smoking in this population: The prevalence of smoking based on whether or not...
The prevalence of smoking in this population:
The prevalence of smoking based on whether or not someone has Parkinson’s:
What is the risk ratio for persons with Parkinson’s? .30/.55= .545
What is the odds ratio for person’s with Parkinson’s
|
Controls |
Parkinson’s Cases |
|
|
Smokers |
55 |
30 |
|
Non smokers |
45 |
70 |
Odds for Parkinson’s cases:
Odds for Controls:
Odds ratio:
Interpret your results
Homework Answers
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The prevalence of smoking in this population:
The prevalence of smoking based on whether or not...
In a population-based cohort study, an entire community was interviewed regarding smoking habits and then followed for o...
In a population-based cohort study, an entire community was interviewed regarding smoking habits and then followed for one year. Upon ascertainment of all lung cancer deaths, the investigator obtained the following data: [which may or may not be in the standard table to calculate your answers – beware!]. Number of individuals Incidence of Lung cancer deaths Smokers 24,500 15 Non-smokers 10,500 2 Calculate the RR of smoking and lung cancer death. Interpret your results in a sentence. ...
A study comparing smokers to non-smokers history as a risk factor for Parkinson’s Disease reports an...
A study comparing smokers to non-smokers history as a risk factor for Parkinson’s Disease reports an incidence rate ratio of 0.3 comparing smokers to non-smokers. 1. What is the study design? 2. If the association is real, do these findings indicate an increase or decrease in risk for Parkinson’s disease? 3. A case-control study comparing Alzheimer’s cases to controls reported cases were less likely to have reported past smoking. Then, what kind of bias may explain these results?
Researchers are interested in estimating the prevalence of smoking in college campuses. . Suppose the population...
Researchers are interested in estimating the prevalence of smoking in college campuses. . Suppose the population prevalence is 25% and the research team has enrolled 300 current college students in their study, a. can we approximate with the normal distribution in this hypothetical example? Why or why not? b. What is the mean number of smokers in this sample? State also its variance. c. What is the probability of observing at least 100 students in this sample to be smokers?...
In your opinion, which of the below three study design is best to assess the relationship...
In your opinion, which of the below three study design is best to assess the relationship between smoking and CRC? Why? (6 sentences) No plagiarism please Cross Sectional Study 1. Verga Enterprises is conducting a study to assess the relationship between smoking and colorectal cancer (CRC). In the survey that was conducted, 20 out of 100 non-smokers had CRC, while 40 out of 60 smokers had CRC. (a) What makes this a Cross Sectional study design? This particular case is...
help Consider the following data from a study examining the relationship between smoking behaviour and 20-year...
help
Consider the following data from a study examining the relationship between smoking behaviour and 20-year survival status of 1314 women (Appleton et al. 1996). Status after 20 years Dead Alive Smoker 139 443 Non-smoker 230 502 Total 369 945 Total 582 732 1314 (a) Determine each of the following: (i) The percentage of the smoker group who died in 20 years. (ii) The proportion of the non-smoker group who died in 20 years. (iii) The risk of death for...
s Question Completion Status: QUESTION 65 Please complete the calculations for the following questions. You must correctly explicitly state the including the disease/outcome, the place of interes...
s Question Completion Status: QUESTION 65 Please complete the calculations for the following questions. You must correctly explicitly state the including the disease/outcome, the place of interest, and the time/duration or appropriate time units (for example: "Smokers had 5.2 times the odds of having lung cancer compared to non-smokers context of your answer by A 15 year follow-up study was conducted examining the relationship between environmental tobacco smoke (ETS) and developing a myocardial infarction (MI). ETS was measured based on...
Lung Cancer & Smoking Case Study A causal relationship between cigarette smoking and lung cancer was...
Lung Cancer & Smoking Case Study A causal relationship between cigarette smoking and lung cancer was first suspected in the 1920s on the basis of clinical observations. To test this apparent association, numerous epidemiologic studies were undertaken between 1930 and 1960. Two studies were conducted by Richard Doll and Austin Bradford Hill in Great Britain The first was a case-control study begun in 1947 comparing the smoking habits of lung cancer patients with the smoking habits of other patients. The...
A study comparing smokers to non-smokers history as a risk factor for Parkinson's Disease reports an...
A study comparing smokers to non-smokers history as a risk factor for Parkinson's Disease reports an incidence rate ratio of 0.3 comparing smokers to non-smokers. Explain your answers. 1) What is the study design? 2) If the association is real, do these findings indicate an increase or decrease in risk for Parkinson's disease? 3) A case-control study comparing Alzheimer's cases to controls reported cases were less likely to have reported past smoking. What kind of bias may explain these results?
2. In another vaccination study, the incidence of chicken pox among non-vaccinated children, younger than 12,...
2. In another vaccination study, the incidence of chicken pox among non-vaccinated children, younger than 12, was found to be 200/1,000 and the incidence among the vaccinated was 101,000. From another source we know that 30% of the total population (under 12 years of age) was not vaccinated, calculate the following for the given data: (a) The incidence of chicken pox attributable to non-vaccination of the total (under 12) (2 pts) (b) The proportion of the risk of chicken pox...
please fill in the table and answer each question fully as well a one interpretation sentence...
please fill in the table and answer each question
fully as well a one interpretation sentence for each.
please answer careffully and correctly
For Questions 30-32: In a population-based cohort study, an entire community was interviewed regarding smoking habits and then followed for one year. Upon asoertainment of all lung cancer deaths, the investigator obtained the following data: Number of individual 24,500 10,500 Lung cancer deaths 15 Smokers Non-smokers Disease Status Yes No Total Exposure Yes Status No 30. 1...
help
Consider the following data from a study examining the relationship between smoking behaviour and 20-year survival status of 1314 women (Appleton et al. 1996). Status after 20 years Dead Alive Smoker 139 443 Non-smoker 230 502 Total 369 945 Total 582 732 1314 (a) Determine each of the following: (i) The percentage of the smoker group who died in 20 years. (ii) The proportion of the non-smoker group who died in 20 years. (iii) The risk of death for...
s Question Completion Status: QUESTION 65 Please complete the calculations for the following questions. You must correctly explicitly state the including the disease/outcome, the place of interest, and the time/duration or appropriate time units (for example: "Smokers had 5.2 times the odds of having lung cancer compared to non-smokers context of your answer by A 15 year follow-up study was conducted examining the relationship between environmental tobacco smoke (ETS) and developing a myocardial infarction (MI). ETS was measured based on...
Lung Cancer & Smoking Case Study A causal relationship between cigarette smoking and lung cancer was first suspected in the 1920s on the basis of clinical observations. To test this apparent association, numerous epidemiologic studies were undertaken between 1930 and 1960. Two studies were conducted by Richard Doll and Austin Bradford Hill in Great Britain The first was a case-control study begun in 1947 comparing the smoking habits of lung cancer patients with the smoking habits of other patients. The...
A study comparing smokers to non-smokers history as a risk factor for Parkinson's Disease reports an incidence rate ratio of 0.3 comparing smokers to non-smokers. Explain your answers. 1) What is the study design? 2) If the association is real, do these findings indicate an increase or decrease in risk for Parkinson's disease? 3) A case-control study comparing Alzheimer's cases to controls reported cases were less likely to have reported past smoking. What kind of bias may explain these results?
2. In another vaccination study, the incidence of chicken pox among non-vaccinated children, younger than 12, was found to be 200/1,000 and the incidence among the vaccinated was 101,000. From another source we know that 30% of the total population (under 12 years of age) was not vaccinated, calculate the following for the given data: (a) The incidence of chicken pox attributable to non-vaccination of the total (under 12) (2 pts) (b) The proportion of the risk of chicken pox...
please fill in the table and answer each question
fully as well a one interpretation sentence for each.
please answer careffully and correctly
For Questions 30-32: In a population-based cohort study, an entire community was interviewed regarding smoking habits and then followed for one year. Upon asoertainment of all lung cancer deaths, the investigator obtained the following data: Number of individual 24,500 10,500 Lung cancer deaths 15 Smokers Non-smokers Disease Status Yes No Total Exposure Yes Status No 30. 1...
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