Explain the factors that needed to consider in calculating sample size for a cluster randomised controlled...

Explain the factors that needed to consider in calculating sample size for a cluster randomised controlled trial and how these factors affect sample size, such as p-value, the previous studies, the effect size, etc. (max. 200 words) Please elaborate.

Expert Solution

The factors that needed to consider in calculating sample size for a cluster randomized controlled trial are detailed as below.

orchestra answered 2 years ago

Explain the factors that needed to consider in calculating sample size for a cluster randomised controlled...

Explain the factors that needed to consider in calculating sample size for a cluster randomised controlled trial and how these factors affect sample size. (max. 200 words)

1.Why is the equilibrium cluster size not same as the efficient cluster size? Explain with a...

1.Why is the equilibrium cluster size not same as the efficient cluster size? Explain with a graph. 2.The production of wooden ships is a weight-losing activity (as shown by the large piles of sawdust and wood-scraps) and yet most of the shipyards are located far from a forest. Shipyards locate far from a forest because...Illustrate.

Explain how missing data in randomised controlled trial will affect the conclusion and what methods can...

Explain how missing data in randomised controlled trial will affect the conclusion and what methods can be used to minimise the effect? (max. 200 words)

What sample size is needed if a ±1.5 lbs. margin of error is needed for computing...

What sample size is needed if a ±1.5 lbs. margin of error is needed for computing the 95% confidence interval of the mean weight of U.S. adult males? Assume a population standard deviation of 12 lbs. 9. Find the 99% confidence interval for the mean number of times people blink per hour (bph), given that a sample of 60 people had a mean rate of 1230 bph. Assume a population standard deviation of 200 bph.

There are many factors that impact a sample size. Discuss the factors in regard to a...

There are many factors that impact a sample size. Discuss the factors in regard to a large sample and a small sample, elaborate on the factors for each, 2-3 pages.

What are the factors that determine the sample size? How is sample size calculated for estimating the population mean? Provide examples.

Study Design and Sample Size The study is a non- randomized controlled trial including eight intervention...

Study Design and Sample Size The study is a non- randomized controlled trial including eight intervention and six control schools. The study assessed knowledge, attitudes and behaviors of the students three times over a period of eighteen months: March 2009 (Baseline), March 2010 (TI) and September 2010 (t20. We based the sample size calculation on the study objective of assessing whether or not the intervention influenced the time trend in condom use and recent history of sexual intercourse. Sample size...

a.) What sample size is needed to give a margin of error within +-6 in estimating...

a.) What sample size is needed to give a margin of error within +-6 in estimating a population mean with 95% confidence, assuming a previous sample had s=20. Round your answer up to the nearest integer. sample size = b.) What sample size is needed to give a margin of error within +-13 in estimating a population mean with 99% confidence, assuming a previous sample had s=116 Round your answer up to the nearest integer. sample size = c.) In...

Find the sample size n needed to achieve power 0.8 at EY = 5, for the...

Find the sample size n needed to achieve power 0.8 at EY = 5, for the test in question one at level ⍺ = 0.05. n = _____. Question one for reference: 1. For testing H0: EY = 3 vs H1: EY > 3, based on a sample Y: 1,3,5,7,9, assume that var(Y) = 4 is known. The p-value is _____. (Correct answer to question one: 0.01267366)

13) What is the minimal sample size needed for a 95% confidence interval to have a...

13) What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of 0.1 in the following scenarios? (Round your answers up the nearest whole number.) (a) a preliminary estimate for p is 0.28 (b) there is no preliminary estimate for p

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Explain the factors that needed to consider in calculating sample size for a cluster randomised controlled...

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Explain the factors that needed to consider in calculating sample size for a cluster randomised controlled...

1.Why is the equilibrium cluster size not same as the efficient cluster size? Explain with a...

Explain how missing data in randomised controlled trial will affect the conclusion and what methods can...

What sample size is needed if a ±1.5 lbs. margin of error is needed for computing...

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What are the factors that determine the sample size? How is sample size calculated for estimating the population mean? Provide examples.

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a.) What sample size is needed to give a margin of error within +-6 in estimating...

Find the sample size n needed to achieve power 0.8 at EY = 5, for the...

13) What is the minimal sample size needed for a 95% confidence interval to have a...