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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:

unanswered

Confidence Interval:

Lower Bound:

unanswered

Upper Bound:

  • statistics -

    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

  • statistics -

    1. 2.5

  • statistics -

    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

  • statistics -

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

    where are you getting this data???

  • statistics -

    please help, today is the last date to attempt for this

  • statistics -

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

  • statistics -

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

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