A breast cancer follow-up study included 218 women diagnosed with breast cancer and 3,823 women without...
A breast cancer follow-up study included 218 women diagnosed with breast cancer and 3,823 women without breast cancer. By the end of the study, 72 of the women with breast cancer and 511 of the women without cancer had died. The women with breast cancer were observed for a total of 1,862 person years; the women without cancer were observed for a total of 36,653 person years.
Calculate the incidence rate of death for the women with breast cancer. Response should be provided per 1,000 person-years (##.#).
Homework Answers
Given:
No. of new cases of women with breast cancer during the study = 72
Total no. of years observed for women with breast cancer (person years) = 1862
Incidence rate is computed using the formula:
IR = No. of new cases of women with breast cancer during the study / Total no. of years observed for women with breast cancer
Hence, the incidence rate of death for the women with breast cancer = 38.7 deaths per 1000 person years.
Add Answer to:
A breast cancer follow-up study included 218 women diagnosed
with breast cancer and 3,823 women without...
A diabetes study included 218 diabetic women and 3,823 non-diabetic women. By the end of the...
A diabetes study included 218 diabetic women and 3,823 non-diabetic women. By the end of the study, 83 of the diabetic women and 422 of the non-diabetic women had died. The diabetic women were observed for a total of 1,526 person- years; the non-diabetic women were observed for a total of 31,806 person-years. Calculate the incidence rates (aka incidence density) of death for the diabetic and non-diabetic women (Show work).
math As part of an early study of early detection of breast cancer in the 1960s,...
math
As part of an early study of early detection of breast cancer in the 1960s, 31,000 women in New York were offered screening mammograms. Of these women, 20,200 accepted the screening, while 10,800 refused. Of those that chose to have screening, 23 died from breast cancer in the five years following screening. Of those that refused screening, 16 died of breast cancer in the five years following screening. Does the above data prove that screening reduces women's deaths from...
You are conducting a study to estimate rate of uterine cancer in a population of women....
You are conducting a study to estimate rate of uterine cancer in a population of women. You originally recruited a cohort of 1000 50-year-old women; however, 100 of them had already had a hysterectomy (i.e., had their uterus removed in surgery) at the start of the study. That leaves 900 women in your "at-risk" population. You follow each of these 900 women for 10 years, during which 10 women develop incident (new) uterine cancer. (a) Calculate (to the fifth decimal...
A prospective study of Norwegian women who were followed between 1986 and 2009 was conducted. Within...
A prospective study of Norwegian women who were followed between 1986 and 2009 was conducted. Within that period (1995-2005), a national mammography program was gradually implement ed, with biennial invitations send to women age 50-69. The participants of the study were all women aged 50-79 between 1986-2009. The mortality rate ratios compared women who were invited to screen to those who were not invited, with a clear distinction between cases of breast cancer diagnosed before and after the invitation to...
B) Epidemiologists claim that the probability of breast cancer among Caucasian women in their mid-50s is...
B) Epidemiologists claim that the probability of
breast cancer among
Caucasian women in their mid-50s is 0.005. An established test
identified
people who had breast cancer and those that were healthy. A
new
mammography test in clinical trials has a probability of 0.85 for
detecting
cancer correctly. In women without breast cancer, it has a chance
of 0.925
for a negative result. If a 55-year-old Caucasian woman tests
positive for
breast cancer, what is the probability that she, in fact,...
EPIDEMIOLOGY QUESTION Recently, Australian researchers conducted a study of the relationship between optimism and colon cancer...
EPIDEMIOLOGY QUESTION Recently, Australian researchers conducted a study of the relationship between optimism and colon cancer survival. Their hypothesis was that colon cancer patients who had a positive outlook on life would have a lower five-year cumulative incidence of mortality. The study included 100 recently diagnosed colon cancer patients who underwent psychological testing and were found to have a optimistic outlook on life and 100 recently diagnosed colon cancer patients who underwent the same psychological tests and were found to...
1. A hypothesis has been proposed that breast cancer in women is caused in part by...
1. A hypothesis has been proposed that breast cancer in women is caused in part by events that occur between the age of menarche (time of 1st menstruation) and the age of first childbirth. The hypothesis is that the risk for breast cancer increases as the length of this time interval increases. To test this hypothesis an international study was set up. Breast cancer cases were identified among women in selected hospitals in the United States, Greece, Yugoslavia, Brazil, Taiwan...
In a study of breast cancer, a mother was considered exposed if she first gave birth...
In a study of breast cancer, a mother was considered exposed if she first gave birth at 30 years of age or older. Among 1,628 mothers who were exposed, 31 subsequently developed breast cancer. Among the 4,450 mothers who first gave birth before the age of 30, 65 subsequently developed breast cancer. What is the appropriate conclusion regarding the attributable risk of breast cancer due to an older age at first birth (per 1,000)? Across the US, give birth for...
Problem 1. The HIP trial. If breast cancer is detected early enough, chances of successful treatment...
Problem 1. The HIP trial. If breast cancer is detected early enough, chances of successful treatment are better. Do screening programs speed up detection enough to matter? This was the question asked by the first large-scale trial run by the Health Insurance Plan (HIP) of Greater New York, starting in 1963. The subjects were 62,000 women aged 40 to 64. Half were randomly assigned to a screening group (which included regular exams and X-rays) and the other half were randomly...
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...
math
As part of an early study of early detection of breast cancer in the 1960s, 31,000 women in New York were offered screening mammograms. Of these women, 20,200 accepted the screening, while 10,800 refused. Of those that chose to have screening, 23 died from breast cancer in the five years following screening. Of those that refused screening, 16 died of breast cancer in the five years following screening. Does the above data prove that screening reduces women's deaths from...
A prospective study of Norwegian women who were followed between 1986 and 2009 was conducted. Within that period (1995-2005), a national mammography program was gradually implement ed, with biennial invitations send to women age 50-69. The participants of the study were all women aged 50-79 between 1986-2009. The mortality rate ratios compared women who were invited to screen to those who were not invited, with a clear distinction between cases of breast cancer diagnosed before and after the invitation to...
B) Epidemiologists claim that the probability of
breast cancer among
Caucasian women in their mid-50s is 0.005. An established test
identified
people who had breast cancer and those that were healthy. A
new
mammography test in clinical trials has a probability of 0.85 for
detecting
cancer correctly. In women without breast cancer, it has a chance
of 0.925
for a negative result. If a 55-year-old Caucasian woman tests
positive for
breast cancer, what is the probability that she, in fact,...
Problem 1. The HIP trial. If breast cancer is detected early enough, chances of successful treatment are better. Do screening programs speed up detection enough to matter? This was the question asked by the first large-scale trial run by the Health Insurance Plan (HIP) of Greater New York, starting in 1963. The subjects were 62,000 women aged 40 to 64. Half were randomly assigned to a screening group (which included regular exams and X-rays) and the other half were randomly...
Most questions answered within 3 hours.
-
Buses are powered by chemical reactions. Define matter and the
four states of matter. What is...
asked 13 minutes ago -
Use conservation of energy to find the velocity of a free point
charge q1 at 22cm...
asked 20 minutes ago -
First, describe policies promoted by governments of the
political right to address economic globalization. Second, describe...
asked 37 minutes ago -
M2-9 Completing T-Accounts LO2-4
Following are the transactions of Dennen, Inc., for the month of
January....
asked 37 minutes ago -
Write a program using python that reads from values from a text
file and plots them...
asked 39 minutes ago -
Look up the density of
the metal of the object used in parts A and B...
asked 38 minutes ago -
Discuss strategic considerations that Amazon and NYC politicians
had. Analyze why the deal between Amazon and...
asked 41 minutes ago -
A combustion reaction is describes as a carbon source reacting
with oxygen and producing carbon dioxide...
asked 56 minutes ago -
Buckminsterfullerence is a recently allotrope of carbon in which
carbon atoms form molecules of formula C_60,...
asked 58 minutes ago -
Lower Equitorial and Upper Equitorial are the same except Lower
Equitorial has a larger capital stock....
asked 1 hour ago -
how do you think that pH of a jar where you have added a certain
amount...
asked 1 hour ago -
If the Federal Reserve increases the reserve requirement, what
will happen to the Money Supply in...
asked 1 hour ago