# statistics

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Prospective Cohort Study

The following tables show the crude and sex-specific results from a Prospective Cohort Study that examines the association between a binary exposure (E) and the development of a disease (D) during 20 years of follow-up.

Full Data:

Sex-Specific Data:

Males
1. Assume that this cohort is a simple random sample from a broader population of interest. Model the number of disease positive individuals among all exposed individuals in the sample using the binomial distribution with probability of disease ; and model the number of disease positive individuals among the unexposed in the sample using a binomial distribution, with probability of disease . Estimate , the proportion of exposed individuals who are disease positive, and provide an exact 95% confidence interval.

Estimated Proportion:

Confidence Interval:

Lower Bound:

Upper Bound:

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Use these data to solve the above problem, it will become easier
Full data
D+ D- Total
E+ 30 270 300
E- 20 180 200
Total 50 450 500

Male
D+ D- Total
E+ 12 108 120
E- 8 72 80
Total 20 180 200

Female
D+ D- Total
E+ 18 162 180
E- 12 108 120
Total 30 270 300

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1. 2.5

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Please do not answer these questions, It is not a help. It is challenge for a new education system, I think this should be immediately stopped to cheer at least those who are working hard to learn

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these numbers are wrong. did you change the numbers???

where are you getting this data???

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How do you find confidence interval for the first one(first part)?

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i have first part. If u have a second, wy can exchange.