Consider the situation in a cohort study where the crude, Ask an Expert

Statistics

Consider the situation in a cohort study where the crude risk ratio is 2.5, stratum 1 odds ratio is 1, and stratum 2 odds ratio is 4.0. Which of the following is present: Select one:

a. Positive confounding

b. Negative confounding

c. No effect modification or confounding

d. Effect modification, confounding irrelevant

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91005931

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

The blenders produced by a company have a normally

The blenders produced by a company have a normally distributed life span with a mean of 8.2 years and a standard deviation of 1.3 years. What warranty should be provided so that the company is replacing at most 10% of th ...

Indigo environment corp just paid a dividend of 1 per share

Indigo Environment Corp. just paid a dividend of $1 per share. The dividends are expected to grow at 25% for the next eight years and then level off to 6% growth rate indefinitely. If the required return is 10%, what is ...

Jen and barry calculate the overall cost per shift y for

Jen and Barry calculate the overall cost per shift y for "Jen & Barry's Fast Fresh Salad Bags". They determine that 20 salad bags can be produced for a total cost of $80 and that 50 salad bags can be produced for total c ...

Can someone explain this to me or draw it out so that i can

Can someone explain this to me? Or draw it out so that I can understand. You may see a problem like the following: a mean score of 20 and SD of 3, and asked what percentage of cases will be between 17 and 23, you would r ...

Let a random sample be taken of size n 64 from a

Let a random sample be taken of size n = 64 from a population with a known standard deviation of 15. Suppose that the mean of the sample is 40. Find the 99% confidence interval for the mean of the population from which t ...

For the following two questions please determine the

For the following two questions, please, determine the correct hypothesis test, state the null and research hypotheses in words and in symbols, then conduct the hypothesis test, and report the results in writing. 1. A re ...

Toy wooden blocks are packaged in bags of 9 one bag

Toy wooden blocks are packaged in bags of 9. One bag contains 6 maple blocks and 3 birch blocks, while a second bag contains 5 maple blocks and 4 birch blocks. One block is drawn from the first bag and placed into the se ...

On a correlation matrix you will usually see two values per

On a correlation matrix, you will usually see two values per comparison. The top value for a correlation measurement will be the Pearson correlation, right under that you will see a p-value. I understand when you have a ...

A mail order supplier advertises same-day service on every

A mail order supplier advertises same-day service on every order. Recently, the movement of orders has not gone as planned. The director of customer service has completely redone the method of order handling. The goal of ...

Estimate the proportion of people in various states that

Estimate the proportion of people in various states that will use the courior services. Suppose the true proportion is 0.03. If 476 are sampled, what is the probability that the sample proportion will be less than 0.04?

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert