Suppose you conduct a case-control study of endometrial cancer, with 200 cases and 200 unmatched controls....
Suppose you conduct a case-control study of endometrial cancer, with 200 cases and 200 unmatched controls. According to medical records (which we will assume are correct), 150 of the cases and 100 of the controls have used postmenopausal estrogens.
(a) Construct the appropriate 2x2 table, and compute and interpret the odds ratio for endometrial cancer associated with postmenopausal estrogen use.
Homework Answers
Add Answer to:
Suppose you conduct a case-control
study of endometrial cancer, with 200 cases and 200 unmatched
controls....
. In a hypothetical case-control study of 180 cases of heart disease and 300 unmatched controls,...
. In a hypothetical case-control study of 180 cases of heart disease and 300 unmatched controls, the following 2x2 table was determined for the association of sedentary lifestyle with heart disease: Cases Controls Sedentary lifestyle 135 150 Not sedentary lifestyle 45 150 180 300 (a) Compute the odds ratio for sedentary lifestyle and heart disease. (b) There is concern that sex may be a confounder in the relationship between sedentary lifestyle and heart disease. What three conditions must...
6. A case-control study of 1700 participants looked at the association between Tamoxifen and uterine cancer....
6. A case-control study of 1700 participants looked at the association between Tamoxifen and uterine cancer. The study included 689 cases. There were 139 cases and 58 controls using Tamoxifen. Fill in the 2x2 table. Calculate and interpret the odds ratio.
Suppose a case-control study asked 238 lung cancer patients and 428 controls (matched to the cases...
Suppose a case-control study asked 238 lung cancer patients and 428 controls (matched to the cases by age and sex) whether they had kept a pet bird during adulthood. Of the 238 lung cancer cases, 99 said yes. Of the 428 controls, 102 said yes. (a) Construct a contingency table for the data. Lung Cancer No Lung Cancer Total Bird No Bird Total (b) Compute the risk (as a %) of lung cancer for bird and non-bird owners for this...
You are given results on a case control study on alcoholism and breast cancer, 200m participants with Breast cancer and 200 participants without cancer were selected and questioned on previous alcohol...
You are given results on a case control study on alcoholism and breast cancer, 200m participants with Breast cancer and 200 participants without cancer were selected and questioned on previous alcohol use. Breast Cancer (+) Breast Cancer (-) Total Heavy alcohol use 40 20 60 No/low alcohol use 160 180 340 total 200 200 400 Calculate and interpret the appropriate measure of association for this study? You later learn that 15 of the controls [Breast CANCER (-)] did not remember...
A study looking at ovarian cancer in women compared cases with non-cases, and found that 150/200...
A study looking at ovarian cancer in women compared cases with non-cases, and found that 150/200 cases did not use birth control compared with 50/200 of the non-cases. 1) Create a table to display the data. 2) Calculate the odds of exposure in cases and non-cases. 3) Calculate the odds ratio using the cross-product ratio. 4) How does the difference between the two prevalences of ovarian cancer (75% vs 25%) compare to the odds ratio?
You are given results on a case control study on alcoholism and breast cancer, 200m participants...
You are given results on a case control study on alcoholism and breast cancer, 200m participants with Breast cancer and 200 participants without cancer were selected and questioned on previous alcohol use. Breast Cancer (+) Breast Cancer (-) Total Heavy alcohol use 40 20 60 No/low alcohol use 160 180 340 total 200 200 400 Calculate and interpret the appropriate measure of association for this study? You later learn that 15 of the controls [Breast CANCER (-)] did not remember...
Read the following research study and answer the following questions: A case control study was conducted...
Read the following research study and answer the following questions: A case control study was conducted to evaluate the relationship between direct sun exposure and skin cancer. 150 Cases and 100 controls were recruited from Al Wehda hospital. A data collecting method was distributed among both controls and cases. Analysis of data revealed that 70 of cases were exposed to active smoking while only 40 of controls were exposed. Construct a 2 by 2 table to demonstrate the two dichotomous...
Read the following research study and answer the following questions: A case control study was conducted...
Read the following research study and answer the following questions: A case control study was conducted to evaluate the relationship between direct sun exposure and skin cancer. 150 Cases and 100 controls were recruited from Al Wehda hospital. A data collecting method was distributed among both controls and cases. Analysis of data revealed that 70 of cases were exposed to active smoking while only 40 of controls were exposed. Construct a 2 by 2 table to demonstrate the two dichotomous...
In an epidemiologic study, 147 incident bladder cancer cases were compared to 179 controls selected from...
In an epidemiologic study, 147 incident bladder cancer cases were compared to 179 controls selected from the population that gave rise to the cases with respect to smoking history. The data were as follows: Exposure status Disease Status Case Control Total Smoker 90 82 172 Nonsmoker 57 97 154 Total 147 179 326 Perform the appropriate statistical test of the relationship between bladder cancer and smoking history using the attached SAS file. Assume α = 0.05 (two-tailed) and 80%...
Cell Phone Use and Brain Cancer The association between cellular telephone use and the risk of...
Cell Phone Use and Brain Cancer The association between cellular telephone use and the risk of brain cancer was investigated in a case-control study. The study included 475 cases and 400 controls and the following results were seen: Cases Controls Cellular Yes 270 200 Phone User No 205 200 Total 475 400 Calculate the odds ratio based on these data. 7 points. Calculate the 95% confidence interval for the OR you just calculated. 7...
Suppose a case-control study asked 238 lung cancer patients and 428 controls (matched to the cases by age and sex) whether they had kept a pet bird during adulthood. Of the 238 lung cancer cases, 99 said yes. Of the 428 controls, 102 said yes. (a) Construct a contingency table for the data. Lung Cancer No Lung Cancer Total Bird No Bird Total (b) Compute the risk (as a %) of lung cancer for bird and non-bird owners for this...
Read the following research study and answer the following questions: A case control study was conducted to evaluate the relationship between direct sun exposure and skin cancer. 150 Cases and 100 controls were recruited from Al Wehda hospital. A data collecting method was distributed among both controls and cases. Analysis of data revealed that 70 of cases were exposed to active smoking while only 40 of controls were exposed. Construct a 2 by 2 table to demonstrate the two dichotomous...
Read the following research study and answer the following questions: A case control study was conducted to evaluate the relationship between direct sun exposure and skin cancer. 150 Cases and 100 controls were recruited from Al Wehda hospital. A data collecting method was distributed among both controls and cases. Analysis of data revealed that 70 of cases were exposed to active smoking while only 40 of controls were exposed. Construct a 2 by 2 table to demonstrate the two dichotomous...
Most questions answered within 3 hours.
-
(a) Find ?z such that the proportion of observations that are
less than ?z in a...
asked 6 minutes ago -
Discuss the advantages and disadvantages of a gather society and
an agrarian society in regard to...
asked 29 minutes ago -
What is compliance and how it is related to information
security?
What are the differences between...
asked 28 minutes ago -
Indicate the
amino acid
sequence of the protein encoded by the following mRNA molecule.
Use the...
asked 34 minutes ago -
Weihong Corporation is about to emerge from a Chapter 11
reorganization. Assets of the emerging entity...
asked 33 minutes ago -
Give an example of a successful company in different parts of
the world that have used...
asked 35 minutes ago -
Implement a class CSVReader that reads a CSV file, and provide
methods:
int numbOfRows()
int numberOfFields(int...
asked 34 minutes ago -
Suppose that A and B are mutually exclusive and complementary
events, such that P(A)=0.7 and P(B)=0.3....
asked 1 hour ago -
What parallels can you draw from the African-American performers
Bill" Bojangles" Robinson, James Brown and Michael...
asked 52 minutes ago -
What cognitive disorder does the individual in Oliver
Sacks' book 'The Man Who Mistook His Wife...
asked 58 minutes ago -
how
are genetically identical populations regulated
asked 55 minutes ago -
1. A smaller animal is more likely to be a(n)
insectivore than a frugivore, because it...
asked 1 hour ago