Stat1600 Solution to Midterm #2 Form A
|
|
- Gary Cain
- 7 years ago
- Views:
Transcription
1 Stat1600 Solution to Midterm #2 Form A 1. (10 points) According to the Centers for Disease Control and Prevention, 33.5% U.S. adults have high LDL, or bad, cholestrol. Given a random sample of n=12 U.S. adults, what is the probability that exactly 2 adults have high LDL. P (X= 2) = 12! 2!(12 2)! (.335)2 (1.335) 12 2 = ! (.335) 2 (.665) ! = (.335)2 (.665) 10 = 66 (.335) 2 (.665) 10 = According to a recent population survey, 24.7% of the State of Michigan population 25 years old and over have completed a bachelor s degree. Given a random sample of 100 persons in Michigan 25 years old or over, (a) (10 points) the number of persons who have completed a bachelor s degree is expected to be around, give or take or so. µ = np = = 24.7; σ = npq = 24.7 (1.247) = = The number of people who have completed a bachelor s degree is expected to be around 24.7, give or take (b) (10 points) what is the probability that out of the sample of n=100 that 27 or more have completed a bachelors degree? (Hint: Use the normal approximation of the binomial.) 1
2 P (X 27) = P (X > 26.5) ( ) P Z > = P (Z > 0.42) P (Z 0.42) = = = = = z z 3. According to Larsen, R. J., and Marx, M. L. (1986). An Introduction to Mathematical Statistics and Its Applications. Second Edition. Prentice-Hall, Englewood Cliffs, New Jersey, page 295: There is a theory that the anticipation of a birthday can prolong a person s life. In a study set up to examine that notion statistically, it was found that only 60 of 747 people whose obituaries were published in Salt Lake City in 1975 died in the three-month period preceding their birthday. (a) (10 points) What percentage of people in Salt Lake City in 1975 died in the threemonth period preceding their birthday? ˆp = = 0.08 i.e., 8%. (b) (10 points) Calculate the standard error for your estimate in (a) (1 0.08) SE = = i.e., 1.0%. 747 (c) (10 points) Calculate a 95% confidence interval for the true percentage. 2
3 ME = 1.96SE = = A 95% confidence interval for the true proportion is ( , ) = (0.060, 0.100). Hence a 95% confidence interval for the true percentage is (6.0%, 10.0%). 4. The table below shows the result of a study of the effectiveness of thalidomide in healing mouth ulcers in AIDS patients (an announcement by the National Institutes of Health on October 31, 1995): ulcers healed? YES NO Treatment 14 9 Placebo 1 21 (a) (10 points) Estimate the difference in heal rates (i.e., difference in proportions) of the two groups (Treatment versus Placebo). Let group 1 = Treatment and group 2 = Placebo. Then n 1 = = 23; n 2 = = 22. It follows ˆp 1 = = 0.609; ˆp 2 = 1 22 = The difference in proportions is estimated by ˆp 1 ˆp 2 = = (b) (10 points) Calculate a 95% confidence interval for the difference in heal rates. Does the interval exclude 0? Is the difference statistically significant? ANSWER (show your work): 3
4 From part (a), we can calculate the standard error of the estimated difference in proportions:.609 (1.609).045 (1.045) SE = = = =.111 Hence the margin of error is ME = =.218. Consequently, we can get a 95% c.i. for p 1 p 2 : ( , ) = (0.346, 0.782) which excludes 0. Therefore, the proportions differ and it appears that the heal rate for the Treatment group is greater than that of the Placebo group. Note that the interpretation of this 95% confidence interval: we are 95% confident that the difference in proportions (percentages) is in between (34.6%) and and (78.2%). ulcers healed? YES NO Treatment 14 9 Placebo 1 21 (c) (10 points) Estimate the odds ratio of those who were healed (YES) in the two groups. Interpret your answer in words. The odds ratio is estimated as OR = odds 1 odds 2 = 14/9 1/21 = That is, the odds for those in the Treatment group to be healed is 32.7 times as high as that for those in the Placebo group. (d) (10 points) Estimate the ratio of proportions of those who were healed (YES) in the two groups. Interpret your answer in words. 4
5 The ratio of heal rates is estimated as RR = ˆp 1 ˆp 2 = = 13.5 That is, those in the Treatment group are 13.5 times more likely to be healed than those in the Placebo group. 5. EXTRA CREDIT PROBLEM. (5 points) In the past, numerous epidemiological studies showed that women who were taking combined Hormone Replacement Therapy (HRT) also had a lower-than-average incidence of Coronary Heart Disease (CHD), leading doctors to propose that HRT was protective against CHD. Certainly, the claim was false. List at least two possible confounders and pick one of them to show the pathway graph that connects the confounder, HRT, and CHD. (Source: Wikipedia) There exist possible confounders that could be probable causes to the lower-thanaverage incidence of CHD. For instance, higher socio-economic status and better nutrition. A possible pathway could be higher socio-economic status = lower CHD taking HRT 5
Lesson 14 14 Outline Outline
Lesson 14 Confidence Intervals of Odds Ratio and Relative Risk Lesson 14 Outline Lesson 14 covers Confidence Interval of an Odds Ratio Review of Odds Ratio Sampling distribution of OR on natural log scale
More informationC. The null hypothesis is not rejected when the alternative hypothesis is true. A. population parameters.
Sample Multiple Choice Questions for the material since Midterm 2. Sample questions from Midterms and 2 are also representative of questions that may appear on the final exam.. A randomly selected sample
More informationHormone Replacement Therapy : The New Debate. Susan T. Hingle, M.D.
Hormone Replacement Therapy : The New Debate Susan T. Hingle, M.D. Background Hormone replacement therapy (HRT) is extensively used in the United States, especially for: *treatment of menopausal symptoms
More informationPoint and Interval Estimates
Point and Interval Estimates Suppose we want to estimate a parameter, such as p or µ, based on a finite sample of data. There are two main methods: 1. Point estimate: Summarize the sample by a single number
More informationRandomized trials versus observational studies
Randomized trials versus observational studies The case of postmenopausal hormone therapy and heart disease Miguel Hernán Harvard School of Public Health www.hsph.harvard.edu/causal Joint work with James
More informationBinary Diagnostic Tests Two Independent Samples
Chapter 537 Binary Diagnostic Tests Two Independent Samples Introduction An important task in diagnostic medicine is to measure the accuracy of two diagnostic tests. This can be done by comparing summary
More informationConfidence Intervals for the Difference Between Two Means
Chapter 47 Confidence Intervals for the Difference Between Two Means Introduction This procedure calculates the sample size necessary to achieve a specified distance from the difference in sample means
More information49. INFANT MORTALITY RATE. Infant mortality rate is defined as the death of an infant before his or her first birthday.
49. INFANT MORTALITY RATE Wing Tam (Alice) Jennifer Cheng Stat 157 course project More Risk in Everyday Life Risk Meter LIKELIHOOD of exposure to hazardous levels Low Medium High Consequences: Severity,
More informationHormone therapy and breast cancer: conflicting evidence. Cindy Farquhar Cochrane Menstrual Disorders and Subfertility Group
Hormone therapy and breast cancer: conflicting evidence Cindy Farquhar Cochrane Menstrual Disorders and Subfertility Group The world of hormone therapy in the 1990 s Throughout the 1970s, 1980s and 1990s
More informationBinomial Probability Distribution
Binomial Probability Distribution In a binomial setting, we can compute probabilities of certain outcomes. This used to be done with tables, but with graphing calculator technology, these problems are
More informationPROBABILITY AND STATISTICS. Ma 527. 1. To teach a knowledge of combinatorial reasoning.
PROBABILITY AND STATISTICS Ma 527 Course Description Prefaced by a study of the foundations of probability and statistics, this course is an extension of the elements of probability and statistics introduced
More informationThe Binomial Probability Distribution
The Binomial Probability Distribution MATH 130, Elements of Statistics I J. Robert Buchanan Department of Mathematics Fall 2015 Objectives After this lesson we will be able to: determine whether a probability
More informationConfidence Intervals for Spearman s Rank Correlation
Chapter 808 Confidence Intervals for Spearman s Rank Correlation Introduction This routine calculates the sample size needed to obtain a specified width of Spearman s rank correlation coefficient confidence
More informationExperimental Design. Power and Sample Size Determination. Proportions. Proportions. Confidence Interval for p. The Binomial Test
Experimental Design Power and Sample Size Determination Bret Hanlon and Bret Larget Department of Statistics University of Wisconsin Madison November 3 8, 2011 To this point in the semester, we have largely
More informationSOLUTIONS: 4.1 Probability Distributions and 4.2 Binomial Distributions
SOLUTIONS: 4.1 Probability Distributions and 4.2 Binomial Distributions 1. The following table contains a probability distribution for a random variable X. a. Find the expected value (mean) of X. x 1 2
More informationLesson 17: Margin of Error When Estimating a Population Proportion
Margin of Error When Estimating a Population Proportion Classwork In this lesson, you will find and interpret the standard deviation of a simulated distribution for a sample proportion and use this information
More informationLecture 1: Introduction to Epidemiology
Lecture 1: Introduction to Epidemiology Lecture 1: Introduction to Epidemiology Dankmar Böhning Department of Mathematics and Statistics University of Reading, UK Summer School in Cesme, May/June 2011
More informationOpgaven Onderzoeksmethoden, Onderdeel Statistiek
Opgaven Onderzoeksmethoden, Onderdeel Statistiek 1. What is the measurement scale of the following variables? a Shoe size b Religion c Car brand d Score in a tennis game e Number of work hours per week
More informationAging Well - Part V. Hormone Modulation -- Growth Hormone and Testosterone
Aging Well - Part V Hormone Modulation -- Growth Hormone and Testosterone By: James L. Holly, MD (The Your Life Your Health article published in the December 4th Examiner was a first draft. It was sent
More informationHormones and cardiovascular disease, what the Danish Nurse Cohort learned us
Hormones and cardiovascular disease, what the Danish Nurse Cohort learned us Ellen Løkkegaard, Clinical Associate Professor, Ph.d. Dept. Obstetrics and Gynecology. Hillerød Hospital, University of Copenhagen
More informationData Analysis, Research Study Design and the IRB
Minding the p-values p and Quartiles: Data Analysis, Research Study Design and the IRB Don Allensworth-Davies, MSc Research Manager, Data Coordinating Center Boston University School of Public Health IRB
More informationPRACTICE PROBLEMS FOR BIOSTATISTICS
PRACTICE PROBLEMS FOR BIOSTATISTICS BIOSTATISTICS DESCRIBING DATA, THE NORMAL DISTRIBUTION 1. The duration of time from first exposure to HIV infection to AIDS diagnosis is called the incubation period.
More informationIS 30 THE MAGIC NUMBER? ISSUES IN SAMPLE SIZE ESTIMATION
Current Topic IS 30 THE MAGIC NUMBER? ISSUES IN SAMPLE SIZE ESTIMATION Sitanshu Sekhar Kar 1, Archana Ramalingam 2 1Assistant Professor; 2 Post- graduate, Department of Preventive and Social Medicine,
More informationUNINSURED ADULTS IN MAINE, 2013 AND 2014: RATE STAYS STEADY AND BARRIERS TO HEALTH CARE CONTINUE
UNINSURED ADULTS IN MAINE, 2013 AND 2014: RATE STAYS STEADY AND BARRIERS TO HEALTH CARE CONTINUE December 2015 Beginning in January 2014, the federal Patient Protection and Affordable Care Act (ACA) has
More informationHYPOTHESIS TESTING (ONE SAMPLE) - CHAPTER 7 1. used confidence intervals to answer questions such as...
HYPOTHESIS TESTING (ONE SAMPLE) - CHAPTER 7 1 PREVIOUSLY used confidence intervals to answer questions such as... You know that 0.25% of women have red/green color blindness. You conduct a study of men
More informationBiostatistics: Types of Data Analysis
Biostatistics: Types of Data Analysis Theresa A Scott, MS Vanderbilt University Department of Biostatistics theresa.scott@vanderbilt.edu http://biostat.mc.vanderbilt.edu/theresascott Theresa A Scott, MS
More informationMind on Statistics. Chapter 4
Mind on Statistics Chapter 4 Sections 4.1 Questions 1 to 4: The table below shows the counts by gender and highest degree attained for 498 respondents in the General Social Survey. Highest Degree Gender
More informationtraining programme in pharmaceutical medicine Clinical Data Management and Analysis
training programme in pharmaceutical medicine Clinical Data Management and Analysis 19-21 may 2011 Clinical Data Management and Analysis 19 21 MAY 2011 LocaL: University of Aveiro, Campus Universitário
More informationHYPOTHESIS TESTING (ONE SAMPLE) - CHAPTER 7 1. used confidence intervals to answer questions such as...
HYPOTHESIS TESTING (ONE SAMPLE) - CHAPTER 7 1 PREVIOUSLY used confidence intervals to answer questions such as... You know that 0.25% of women have red/green color blindness. You conduct a study of men
More informationPostmenopausal hormone replacement therapy (HRT)
Postmenopausal Hormone Replacement Therapy and the Primary Prevention of Cardiovascular Disease Linda L. Humphrey, MD, MPH; Benjamin K.S. Chan, MS; and Harold C. Sox, MD Purpose: To evaluate the value
More informationChapter 5: Normal Probability Distributions - Solutions
Chapter 5: Normal Probability Distributions - Solutions Note: All areas and z-scores are approximate. Your answers may vary slightly. 5.2 Normal Distributions: Finding Probabilities If you are given that
More informationThe WHI 12 Years Later: What Have We Learned about Postmenopausal HRT?
AACE 23 rd Annual Scientific and Clinical Congress (2014) Syllabus Materials: The WHI 12 Years Later: What Have We Learned about Postmenopausal HRT? JoAnn E. Manson, MD, DrPH, FACP, FACE Chief, Division
More informationChapter 8 Hypothesis Testing Chapter 8 Hypothesis Testing 8-1 Overview 8-2 Basics of Hypothesis Testing
Chapter 8 Hypothesis Testing 1 Chapter 8 Hypothesis Testing 8-1 Overview 8-2 Basics of Hypothesis Testing 8-3 Testing a Claim About a Proportion 8-5 Testing a Claim About a Mean: s Not Known 8-6 Testing
More informationReview for Test 2. Chapters 4, 5 and 6
Review for Test 2 Chapters 4, 5 and 6 1. You roll a fair six-sided die. Find the probability of each event: a. Event A: rolling a 3 1/6 b. Event B: rolling a 7 0 c. Event C: rolling a number less than
More informationSTAT 360 Probability and Statistics. Fall 2012
STAT 360 Probability and Statistics Fall 2012 1) General information: Crosslisted course offered as STAT 360, MATH 360 Semester: Fall 2012, Aug 20--Dec 07 Course name: Probability and Statistics Number
More informationGENETICS AND INSURANCE: QUANTIFYING THE IMPACT OF GENETIC INFORMATION
GENETICS AND INSURANCE: QUANTIFYING THE IMPACT OF GENETIC INFORMATION Angus Macdonald Department of Actuarial Mathematics and Statistics and the Maxwell Institute for Mathematical Sciences Heriot-Watt
More informationNormal Distribution as an Approximation to the Binomial Distribution
Chapter 1 Student Lecture Notes 1-1 Normal Distribution as an Approximation to the Binomial Distribution : Goals ONE TWO THREE 2 Review Binomial Probability Distribution applies to a discrete random variable
More informationWhat are confidence intervals and p-values?
What is...? series Second edition Statistics Supported by sanofi-aventis What are confidence intervals and p-values? Huw TO Davies PhD Professor of Health Care Policy and Management, University of St Andrews
More informationFairfield Public Schools
Mathematics Fairfield Public Schools AP Statistics AP Statistics BOE Approved 04/08/2014 1 AP STATISTICS Critical Areas of Focus AP Statistics is a rigorous course that offers advanced students an opportunity
More informationThe Women s Health Initiative: The Role of Hormonal Therapy in Disease Prevention
The Women s Health Initiative: The Role of Hormonal Therapy in Disease Prevention Robert B. Wallace, MD, MSc Departments of Epidemiology and Internal Medicine University of Iowa College of Public Health
More informationChapter 19 Confidence Intervals for Proportions
Chapter 19 Confidence Intervals for Proportions Use your TI calculator to find the confidence interval. You must know the number of successes, the sample size and confidence level. Under STAT go to TESTS.
More informationA Simple Method for Estimating Relative Risk using Logistic Regression. Fredi Alexander Diaz-Quijano
1 A Simple Method for Estimating Relative Risk using Logistic Regression. Fredi Alexander Diaz-Quijano Grupo Latinoamericano de Investigaciones Epidemiológicas, Organización Latinoamericana para el Fomento
More informationProspective, retrospective, and cross-sectional studies
Prospective, retrospective, and cross-sectional studies Patrick Breheny April 3 Patrick Breheny Introduction to Biostatistics (171:161) 1/17 Study designs that can be analyzed with χ 2 -tests One reason
More informationBachelor s graduates who pursue further postsecondary education
Bachelor s graduates who pursue further postsecondary education Introduction George Butlin Senior Research Analyst Family and Labour Studies Division Telephone: (613) 951-2997 Fax: (613) 951-6765 E-mail:
More informationTwo-Sample T-Tests Assuming Equal Variance (Enter Means)
Chapter 4 Two-Sample T-Tests Assuming Equal Variance (Enter Means) Introduction This procedure provides sample size and power calculations for one- or two-sided two-sample t-tests when the variances of
More informationMind on Statistics. Chapter 12
Mind on Statistics Chapter 12 Sections 12.1 Questions 1 to 6: For each statement, determine if the statement is a typical null hypothesis (H 0 ) or alternative hypothesis (H a ). 1. There is no difference
More informationJournal Club: Niacin in Patients with Low HDL Cholesterol Levels Receiving Intensive Statin Therapy by the AIM-HIGH Investigators
Journal Club: Niacin in Patients with Low HDL Cholesterol Levels Receiving Intensive Statin Therapy by the AIM-HIGH Investigators Shaikha Al Naimi Doctor of Pharmacy Student College of Pharmacy Qatar University
More informationSTATISTICS 8: CHAPTERS 7 TO 10, SAMPLE MULTIPLE CHOICE QUESTIONS
STATISTICS 8: CHAPTERS 7 TO 10, SAMPLE MULTIPLE CHOICE QUESTIONS 1. If two events (both with probability greater than 0) are mutually exclusive, then: A. They also must be independent. B. They also could
More informationIn the general population of 0 to 4-year-olds, the annual incidence of asthma is 1.4%
Hypothesis Testing for a Proportion Example: We are interested in the probability of developing asthma over a given one-year period for children 0 to 4 years of age whose mothers smoke in the home In the
More informationAP Stats- Mrs. Daniel Chapter 4 MC Practice
AP Stats- Mrs. Daniel Chapter 4 MC Practice Name: 1. Archaeologists plan to examine a sample of 2-meter-square plots near an ancient Greek city for artifacts visible in the ground. They choose separate
More informationSAMPLE SIZE TABLES FOR LOGISTIC REGRESSION
STATISTICS IN MEDICINE, VOL. 8, 795-802 (1989) SAMPLE SIZE TABLES FOR LOGISTIC REGRESSION F. Y. HSIEH* Department of Epidemiology and Social Medicine, Albert Einstein College of Medicine, Bronx, N Y 10461,
More information1. What is the critical value for this 95% confidence interval? CV = z.025 = invnorm(0.025) = 1.96
1 Final Review 2 Review 2.1 CI 1-propZint Scenario 1 A TV manufacturer claims in its warranty brochure that in the past not more than 10 percent of its TV sets needed any repair during the first two years
More informationChi Squared and Fisher's Exact Tests. Observed vs Expected Distributions
BMS 617 Statistical Techniques for the Biomedical Sciences Lecture 11: Chi-Squared and Fisher's Exact Tests Chi Squared and Fisher's Exact Tests This lecture presents two similarly structured tests, Chi-squared
More informationStat 1040, Spring 2009 Homework 1 Solutions (with two extra problems at the end)
Stat 1040, Spring 2009 Homework 1 Solutions (with two extra problems at the end) 1. A 1999 study claimed that Infants who sleep at night in a bedroom with a light on may be at higher risk for myopia (nearsightedness)
More informationGuidance for Industry Diabetes Mellitus Evaluating Cardiovascular Risk in New Antidiabetic Therapies to Treat Type 2 Diabetes
Guidance for Industry Diabetes Mellitus Evaluating Cardiovascular Risk in New Antidiabetic Therapies to Treat Type 2 Diabetes U.S. Department of Health and Human Services Food and Drug Administration Center
More informationNow, observe again the 10 digits we use to represent numbers. 0 1 2 3 4 5 6 7 8 9 Notice that not only is each digit different from every other
VARIABLES- NOMINAL, ORDINAL and INTERVAL/SCALE LEVELS OF MEASUREMENT Variables: traits or characteristics that vary from one individual, group, or society to another individual, group, or society. Examples:
More informationChapter 3. Sampling. Sampling Methods
Oxford University Press Chapter 3 40 Sampling Resources are always limited. It is usually not possible nor necessary for the researcher to study an entire target population of subjects. Most medical research
More information4. Continuous Random Variables, the Pareto and Normal Distributions
4. Continuous Random Variables, the Pareto and Normal Distributions A continuous random variable X can take any value in a given range (e.g. height, weight, age). The distribution of a continuous random
More informationSTATISTICS 8, FINAL EXAM. Last six digits of Student ID#: Circle your Discussion Section: 1 2 3 4
STATISTICS 8, FINAL EXAM NAME: KEY Seat Number: Last six digits of Student ID#: Circle your Discussion Section: 1 2 3 4 Make sure you have 8 pages. You will be provided with a table as well, as a separate
More informationShould I Continue Having Mammograms to Screen for Breast Cancer? A decision aid for women aged 70 and older at their next screening mammogram.
Should I Continue Having Mammograms to Screen for Breast Cancer? A decision aid for women aged 70 and older at their next screening mammogram. AUSTRALIAN SCREENING MAMMOGRAPHY DECISION AID TRIAL Why is
More informationc. Construct a boxplot for the data. Write a one sentence interpretation of your graph.
MBA/MIB 5315 Sample Test Problems Page 1 of 1 1. An English survey of 3000 medical records showed that smokers are more inclined to get depressed than non-smokers. Does this imply that smoking causes depression?
More informationHealth risks and benefits from calcium and vitamin D supplementation: Women's Health Initiative clinical trial and cohort study
DOI 10.1007/s00198-012-2224-2 ORIGINAL ARTICLE Health risks and benefits from calcium and vitamin D supplementation: Women's Health Initiative clinical trial and cohort study R. L. Prentice & M. B. Pettinger
More informationNormal distribution. ) 2 /2σ. 2π σ
Normal distribution The normal distribution is the most widely known and used of all distributions. Because the normal distribution approximates many natural phenomena so well, it has developed into a
More informationCohort Studies. Sukon Kanchanaraksa, PhD Johns Hopkins University
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License. Your use of this material constitutes acceptance of that license and the conditions of use of materials on this
More informationDepartment/Academic Unit: Public Health Sciences Degree Program: Biostatistics Collaborative Program
Department/Academic Unit: Public Health Sciences Degree Program: Biostatistics Collaborative Program Department of Mathematics and Statistics Degree Level Expectations, Learning Outcomes, Indicators of
More informationBASIC COURSE IN STATISTICS FOR MEDICAL DOCTORS, SCIENTISTS & OTHER RESEARCH INVESTIGATORS INFORMATION BROCHURE
INDIAN COUNCIL OF MEDICAL RESEARCH BASIC COURSE IN STATISTICS FOR MEDICAL DOCTORS, SCIENTISTS & OTHER RESEARCH INVESTIGATORS October 13 th 17 th 2014 INFORMATION BROCHURE COURSE OFFERED BY Division of
More informationIntroduction to Statistics and Quantitative Research Methods
Introduction to Statistics and Quantitative Research Methods Purpose of Presentation To aid in the understanding of basic statistics, including terminology, common terms, and common statistical methods.
More informationUniversity of Michigan Dearborn Graduate Psychology Assessment Program
University of Michigan Dearborn Graduate Psychology Assessment Program Graduate Clinical Health Psychology Program Goals 1 Psychotherapy Skills Acquisition: To train students in the skills and knowledge
More informationReview. March 21, 2011. 155S7.1 2_3 Estimating a Population Proportion. Chapter 7 Estimates and Sample Sizes. Test 2 (Chapters 4, 5, & 6) Results
MAT 155 Statistical Analysis Dr. Claude Moore Cape Fear Community College Chapter 7 Estimates and Sample Sizes 7 1 Review and Preview 7 2 Estimating a Population Proportion 7 3 Estimating a Population
More informationChapter 4. Probability Distributions
Chapter 4 Probability Distributions Lesson 4-1/4-2 Random Variable Probability Distributions This chapter will deal the construction of probability distribution. By combining the methods of descriptive
More informationTHE CORRELATION BETWEEN PHYSICAL HEALTH AND MENTAL HEALTH
HENK SWINKELS (STATISTICS NETHERLANDS) BRUCE JONAS (US NATIONAL CENTER FOR HEALTH STATISTICS) JAAP VAN DEN BERG (STATISTICS NETHERLANDS) THE CORRELATION BETWEEN PHYSICAL HEALTH AND MENTAL HEALTH IN THE
More informationUse of the Chi-Square Statistic. Marie Diener-West, PhD Johns Hopkins University
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License. Your use of this material constitutes acceptance of that license and the conditions of use of materials on this
More informationNumber. Source: Vital Records, M CDPH
Epidemiology of Cancer in Department of Public Health Revised April 212 Introduction The general public is very concerned about cancer in the community. Many residents believe that cancer rates are high
More informationHypothesis Testing. Steps for a hypothesis test:
Hypothesis Testing Steps for a hypothesis test: 1. State the claim H 0 and the alternative, H a 2. Choose a significance level or use the given one. 3. Draw the sampling distribution based on the assumption
More informationNew Cholesterol Guidelines: Carte Blanche for Statin Overuse Rita F. Redberg, MD, MSc Professor of Medicine
New Cholesterol Guidelines: Carte Blanche for Statin Overuse Rita F. Redberg, MD, MSc Professor of Medicine Disclosures & Relevant Relationships I have nothing to disclose No financial conflicts Editor,
More informationClinical Trial Designs for Firstline Hormonal Treatment of Metastatic Breast Cancer
Clinical Trial Designs for Firstline Hormonal Treatment of Metastatic Breast Cancer Susan Honig, M.D. Patricia Cortazar, M.D. Rajeshwari Sridhara, Ph.D. Acknowledgements John Johnson Alison Martin Grant
More informationThe Women s Health Initiative where are we a decade later?
The Women s Health Initiative where are we a decade later? Henry G. Burger MIMR-PHI Institute & Jean Hailes for Women s Health, Melbourne, Australia Disclosures: Henry Burger Sources of Funding Pharmaceutical
More informationKomorbide brystkræftpatienter kan de tåle behandling? Et registerstudie baseret på Danish Breast Cancer Cooperative Group
Komorbide brystkræftpatienter kan de tåle behandling? Et registerstudie baseret på Danish Breast Cancer Cooperative Group Lotte Holm Land MD, ph.d. Onkologisk Afd. R. OUH Kræft og komorbiditet - alle skal
More informationComparison of Mesothelioma Deaths between the Education Sector and Other Occupations.
Comparison of Mesothelioma between the Education Sector and Other Occupations. The incidence of teachers mesothelioma deaths is significantly greater than some other occupations. Asbestos exposure normally
More information11. Analysis of Case-control Studies Logistic Regression
Research methods II 113 11. Analysis of Case-control Studies Logistic Regression This chapter builds upon and further develops the concepts and strategies described in Ch.6 of Mother and Child Health:
More informationWhat do we mean by cause in public health?
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License. Your use of this material constitutes acceptance of that license and the conditions of use of materials on this
More informationIntroduction. Hypothesis Testing. Hypothesis Testing. Significance Testing
Introduction Hypothesis Testing Mark Lunt Arthritis Research UK Centre for Ecellence in Epidemiology University of Manchester 13/10/2015 We saw last week that we can never know the population parameters
More informationCharacteristics of Binomial Distributions
Lesson2 Characteristics of Binomial Distributions In the last lesson, you constructed several binomial distributions, observed their shapes, and estimated their means and standard deviations. In Investigation
More informationStatistik for MPH: 2. 10. september 2015. www.biostat.ku.dk/~pka/mph15. Risiko, relativ risiko, signifikanstest (Silva: 110-133.) Per Kragh Andersen
Statistik for MPH: 2 10. september 2015 www.biostat.ku.dk/~pka/mph15 Risiko, relativ risiko, signifikanstest (Silva: 110-133.) Per Kragh Andersen 1 Fra den. 1 uges statistikundervisning: skulle jeg gerne
More informationTests for One Proportion
Chapter 100 Tests for One Proportion Introduction The One-Sample Proportion Test is used to assess whether a population proportion (P1) is significantly different from a hypothesized value (P0). This is
More informationWith Big Data Comes Big Responsibility
With Big Data Comes Big Responsibility Using health care data to emulate randomized trials when randomized trials are not available Miguel A. Hernán Departments of Epidemiology and Biostatistics Harvard
More informationChapter 2. Hypothesis testing in one population
Chapter 2. Hypothesis testing in one population Contents Introduction, the null and alternative hypotheses Hypothesis testing process Type I and Type II errors, power Test statistic, level of significance
More informationStatistics 100 Sample Final Questions (Note: These are mostly multiple choice, for extra practice. Your Final Exam will NOT have any multiple choice!
Statistics 100 Sample Final Questions (Note: These are mostly multiple choice, for extra practice. Your Final Exam will NOT have any multiple choice!) Part A - Multiple Choice Indicate the best choice
More information14.74 Lecture 4: Health Esther Duflo February 17, 2004
14.74 Lecture 4: Health Esther Duflo February 17, 2004 1 The burden of disease The burden of disease is large, and very unequally distributed: See table 2 in page 1 of the handout: In 1990, 50 million
More informationWhat is a P-value? Ronald A. Thisted, PhD Departments of Statistics and Health Studies The University of Chicago
What is a P-value? Ronald A. Thisted, PhD Departments of Statistics and Health Studies The University of Chicago 8 June 1998, Corrections 14 February 2010 Abstract Results favoring one treatment over another
More informationHRT. An overview of the risks of hormone replacement therapy. Lloyd s emerging risks team report
HRT An overview of the risks of hormone replacement therapy Lloyd s emerging risks team report 1 Disclaimer This document is intended for general information purposes only. Whilst all care has been taken
More informationABORTION IN PRESENT DAY VIETNAM
ABORTION IN PRESENT DAY VIETNAM Nguyen Thanh Binh Ph.d student, Free University of Berlin, Germany E-mail: binh1980gdct@yahoo.com.vn Abstract In recent years, the abortion rate in Vietnam has been likely
More informationCoronary Heart Disease (CHD) Brief
Coronary Heart Disease (CHD) Brief What is Coronary Heart Disease? Coronary Heart Disease (CHD), also called coronary artery disease 1, is the most common heart condition in the United States. It occurs
More informationTwo-Sample T-Tests Allowing Unequal Variance (Enter Difference)
Chapter 45 Two-Sample T-Tests Allowing Unequal Variance (Enter Difference) Introduction This procedure provides sample size and power calculations for one- or two-sided two-sample t-tests when no assumption
More informationPromoting the Fountain of Youth: Low-T and Estrogen Deficiency
Promoting the Fountain of Youth: Low-T and Estrogen Deficiency Adriane Fugh-Berman MD Georgetown University Medical Center ajf29@georgetown.edu Hormone Therapy in Women Animal glandulars became popular
More informationADVANCE: a factorial randomised trial of blood pressure lowering and intensive glucose control in 11,140 patients with type 2 diabetes
ADVANCE: a factorial randomised trial of blood pressure lowering and intensive glucose control in 11,140 patients with type 2 diabetes Effects of a fixed combination of the ACE inhibitor, perindopril,
More informationConfidence Interval for a Proportion
Confidence Interval for a Proportion Example 74% of a company s customers would like to see new product packaging. A random sample of 50 customers is taken. X is the number of customers in the sample who
More informationBayesian Tutorial (Sheet Updated 20 March)
Bayesian Tutorial (Sheet Updated 20 March) Practice Questions (for discussing in Class) Week starting 21 March 2016 1. What is the probability that the total of two dice will be greater than 8, given that
More informationFebruary 25, 2014. Dear Dr. Hamburg:
February 25, 2014 Margaret A. Hamburg, M.D. Commissioner Food and Drug Administration Department of Health and Human Services WO 2200 10903 New Hampshire Avenue Silver Spring, MD 20993-0002 Division of
More information