Environmental HealthMuch discussion has taken place concerning possible health hazards from exposure to anesthetic gases. In one study conducted in 1972, 531 nurse anesthetists were surveyed by mail questionnaires and telephone interviews todetermine the incidence rate of cancer. Of this group, 7 women reported having a new malignancy other than skin cancer during 1971.USE SALT(a) What is the best estimate of the 1971 incidence rate from these data? (Round your answer to four decimal places.)(b) Provide a 95% CI for the true incidence rate. (Enter your answer using interval notation. Round your numerical values to four decimal places.)A comparison was made between the above report and the 1969 cancer-incidence rates from the Connecticut tumor registry, where the expected incidence rate, based on the age distribution of the nurses in the above study, wasdetermined to be 402.8 per 100,000 person-years.(c) Comment on the comparison between the observed incidence rate and the Connecticut tumor registry data. (Round your answer to four decimal places.)Expressed as a decimal, the expected incidence rate of the the female population of Connecticut ispopulation of nurse anesthetists represented by the study is notThis value is✔ significantly different from that of the female population of Connecticut.✔ within previously found interval which suggests the cancer rate among the

Given that : There are 531 nurses were surveyed

Answered: Environmental Health luch discussion…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In the US, 43.9% of all people have type O blood, 40.6% have type A blood, 10.8% have type B blood and 4.7% have type AB blood. A researcher wants to see if the distribution of blood type is different for millionaires. The table below shows the results of a random sample of 3488 millionaires. What can be concluded at the a = 0.05 significance level? a. Complete the table by filling in the expected frequencies. Round to the nearest whole number: Frequencies of Blood Type Outcome Frequency Expected Frequency 1521 A 1427 В 376 АВ 164
. Do patients with gastrointestinal issues experience more psychological distress than the general population? The DASS-21 questionnaire is a validated measure of depression, anxiety, and stress. For the general population, the mean for anxiety is µ = 4.2. Anxiety levels are calculated based on self-reported answers to questions on a scale from 0 through 42, with lower scores indicating lower anxiety. Participants with gastrointestinal issues (specifically inflammatory bowel disease, IBD) completed the DASS-21. Use the data presented below to determine whether having gastrointestinal issues like IBD significantly increases risk for anxiety. Test whether or not the performance of this sample is significantly higher than the normal population using the proper t-test. Here are the data: Anxiety scores: 12, 15, 10, 8, 10, 5, 10, 13, 4, 6 ANALYSES AND UNGRADED OPTIONAL GUIDING QUESTIONS: 1a. Identify the Indep.Variable:__ Dep.Variable:__ Is it the Hypothesis…
A researcher wants to find the effect of a special diet on systolic blood pressure. A sample of 7 adults was selected to start them on this diet for 3 months. Based on this information, can it be stated that systolic blood pressure changes with the special diet? The test statistic that will determine whether systolic blood pressure changes with the special diet is...... A. 1.23 B. 0.48 C. 18.1 D. 21.08 E. 4.08
Discuss the basic epidemiology measures used in the Colorado uranium miners study. Specifically what measure of risk was used? How was risk calculated? (Hint: Consider a 2 by 2 table to display the data). Do you agree with the authors' conclusions? What would you infer from the data? Why?
(3) The table contains hypothetical data from a study that a bank conducted on the credit card balances of male and female credit card holders (credit cards owned by both men and women were left out of the study). Male Female Mean $3,550 $2,670 Median $2,175 $2,500 Std Dev $1,240 $825 a. What conclusions can we come to by comparing the medians of the males and females? b. What conclusions can we come to by comparing the standard deviations of the males and females? c. Notice that the mean and median of the males are fairly far apart while the mean and median of the females are not. What does this tell us about the credit card balances of the males vs the credit card balances of the females?
A researcher want to know if there is a relationship between sleep and anxiety. The researcher randomly selected n = 5 participants and asked each to rate their sleep quality and anxiety level on a scale of 1 to 5. The data are below: Sleep X Anxiety Y 2 2 3 3 2 2 4 2 5 2 Calculate Pearson's r
What is the base rate(or prevalence in medical literature) and sensitivity(the percentage of individuals with a disease who are correctly classified as having the disease?)
information is also recorded on males/females in the community. Please use the information to answer the question below. Population Deaths 238 Deaths due to Jingle Jangle 143 Deaths due to Fizzle Rocks 45 Deaths due to Other Causes Males 251,480 40.0 per 100,000 56.86 per 100,000 22.94 per 100,000 79.8 per 100,000 50 Females 248,520 221 57 21 143 What is the cause-specific mortality rate pertaining to deaths from Jingle Jangle among the population living in Riverdale this year?
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