Question

You are performing a cohort study. If the probability of developing the disease in the exposed group is .05 for the study duration, then if you sample (randomly) 500 exposed people, how many do you expect to develop the disease? Give a margin of error (+/- 1 standard deviation) for your estimate.

Answer #1

1. True or False
A cohort study involves a group of individuals who has a disease
compared to a similar group without the disease.
2. Matching- I believe you can match multiple letters with each
number.
A. a group of participants who share some common
characteristics and monitored or followed over time
1. Bias
B. Strongly associated with outcome
2. Clinical Trial
C. Systematic uncertainty
3. Confounding
D. At a single point in time
4. Cohort
E. Subjects receive two...

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Question 12
You read a research report of a cohort study designed to examine
risk factors A cohort is a group of people who?
All experience the outcome of interest
All experience the exposure of interest
C. Have the outcome of nterest at the study baseline, and are
followed over time.
d. are always a random sample of a defined population
E. Have something in common at the baseline and are followed
over time to assess their outcomes

A cohort study was undertaken to examine the association between
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both lipid level and risk of heart disease, age was considered a
potential confounder, and the age of each subject was recorded. The
following data describes the study participants:
Developed CHD No
CHD
EXPOSED (High lipid level)...

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as 25% of adults over 50 never graduated from high school. we wish
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Question: It is believed that as many as 25% of adults
over 50 never graduated from high school. We wish to...
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it is believed that as many as 21% of adults over 50 never
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cell phones have no effect, there is a 0.000474 probability of a
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therefore expect about 196 cases of such cancer in a group of 412
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(Use the normal approximation from now on)
c) What is the probability...

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developed cancer of the brain or nervous system. Assuming that cell
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therefore expect about 181 cases of such cancer in a group of
389,845 people. Estimate the probability of 172 or fewer cases of
such cancer in a group of 389 comma 389,845 people. What do...

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