Which one of the following statements is/are true or false regarding cohort and case-control studies? (I) Case-control studies are controlled experiments, whilst cohort studies are observational studies. (II) Case-control studies are better for rare diseases, compared to cohort studies.
foass77W
Answered question
2020-10-28
Which of the following claims about cohort and case-control studies is true, and which ones are false?
(I) Case-control studies are controlled experiments, whilst cohort studies are observational studies.
(II) Case-control studies are better for rare diseases, compared to cohort studies.
Answer & Explanation
Pohanginah
Skilled2020-10-29Added 96 answers
Step 1 Result and Explanation:
(i) Observational Studies: Observational studies are an important category of study designs. Randomized controlled experiments are not always necessary or morally appropriate to carry out in order to answer some research questions in surgical procedures. Instead, observational studies might be the most effective approach to answer this kind of query. Cohort studies and Case-control studies are two primary types of observational studies that are evaluating associations between diseases and exposures. Observational studies fall under the category of analytical study designs and are further sub-classified as observational or experimental study designs. Case control studies and cohort studies offers specific advantages by measuring disease occurrence. Cohort and case-control studies both fall under the category of controlled experiments, whereas case-control studies are observational research.
Step 2 Result and Explanation:
(ii) Case-control studies are better for rare diseases, compared to cohort studies. It is true because they do not require a long follow-up period means as the disease has already developed and are hence much cheaper. It is also very suitable for diseases with a long period such as cancer. However, case-control studies are less adept at showing a casual relationship than cohort studies and there are more prone to bias. Cohort studies are not same as case-control studies, the exposure and outcomes have already happened.
New Questions in High school statistics
Read carefully and choose only one option
A statistic is an unbiased estimator of a parameter when (a) the statistic is calculated from a random sample. (b) in a single sample, the value of the statistic is equal to the value of the parameter. (c) in many samples, the values of the statistic are very close to the value of the parameter. (d) in many samples, the values of the statistic are centered at the value of the parameter. (e) in many samples, the distribution of the statistic has a shape that is approximately NormalConstruct all random samples consisting three observations from the given data. Arrange the observations in ascending order without replacement and repetition.
86 89 92 95 98.Find the mean of the following data: 12,10,15,10,16,12,10,15,15,13.
The equation has a positive slope and a negativey-intercept.
1) y=−2x−3
2) y=2−3x
3) y=2+3x
4) y=−2+3xWhat term refers to the standard deviation of the sampling distribution?
Fill in the blanks to make the statement true: .
What percent of is
The first 15 digits of pi are as follows: 3.14159265358979
The frequency distribution table for the digits is as follows:
Which two digits appear for 3 times each?
A) 1, 7
B) 2, 6
C) 5, 9<br<D) 3, 8How to write
What is the simple interest of a loan for $1000 with 5 percent interest after 3 years?
What number is 12% of 45?
The probability that an automobile being filled with gasoline also needs an oil change is 0.30; the probability that it needs a new oil filter is 0.40; and the probability that both the oil and the filter need changing is 0.10. (a) If the oil has to be changed, what is the probability that a new oil filter is needed? (b) If a new oil filter is needed, what is the probability that the oil has to be changed?
Leasing a car. The price of the car is$45,000. You have $3000 for a down payment. The term of the lease is and the interest rate is 3.5% APR. The buyout on the lease is51% of its purchase price and it is due at the end of the term. What are the monthly lease payments (before tax)?
The mean of sample A is significantly different than the mean of sample B. Sample A: Sample B: Use a two-tailed -test of independent samples for the above hypothesis and data. What is the -value?
What is mean and its advantages?
