Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Investigators followed a population of 2,000 women aged over 65 years who did not have osteoporosis, over a 10-year period and measured the number of cases of osteoporosis diagnosed during that time-period. The investigators were interested in the effect of regular exercise on the development of osteoporosis. They divided the women into two groups: 1,000 women who exercised (exposed) and 1,000 women who did not exercise regularly (unexposed).

During the 10-year study period, investigators recorded 800 cases of osteoporosis, 300 in those women who exercised regularly and 500 in those who did not. Thu number of person-years at risk was 8,350 in the exposed group and 6,950 in the unexposed group
problem: a) find out the risk ratio, odds ratio and incidence rate ratio for the effect of regular excercise on osteoporosis in these women and provide a one-sentence interpretation for each result

b) contrast the findings of these measures of association, and discuss which measure is most appropiate

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M944417

Have any Question? 


Related Questions in Statistics and Probability

Problem 1 part i hypothesis testingconduct a one-tailed

Problem 1: PART I. HYPOTHESIS TESTING Conduct a one-tailed hypothesis test given the information below. A manufacturer wants to increase the shelf life of a line of cake mixes. Past records indicate that the average shel ...

For this assignment you will continue to use data derived

For this assignment you will continue to use data derived from Capital Bikeshare trip records from 2011 and 2012, this time analysing patterns in daily numbers of rentals by casual users. References and Data Sources: Bac ...

Three experiments investigating the relation between need

Three experiments investigating the relation between need for cognitive closure and persuasion were performed. Part of the study involved administering a "need for closure scale" to a group of students enrolled in an int ...

1 all successful empires share certain characteristics what

1. All successful empires share certain characteristics. What are these characteristics and how do they relate to the rise of the Muslim empires? Put Islam in its historical context and explain how the Umayyad and Abbasi ...

1 use your own random mu sigma to generate four sets of

1) Use your own random (μ, σ) to generate four sets of (normal-distribution based) random numbers (i.e., samples) of sizes n = 5, 20, 80, and 320, respectively. 2) Calculate the means and standard deviations for the 4 sa ...

Define the confounds in the following list and tell why

Define the confounds in the following list and tell why each confound undermines the internal validity of an experiment: a. biased assignment of participants to conditions b. differential attrition c. pretest sensitizati ...

The mixed methods approachthrough your work in this unit

The Mixed Methods Approach Through your work in this unit, you have come to understand just how different quantitative and qualitative decision-making techniques are. Perhaps that is why a mixed methods decision-making t ...

Imagine that your town or city has increased its nighttime

Imagine that your town or city has increased its nighttime police patrols to reduce crime. Design two quasi-experiments to determine whether this intervention has been effective, one that uses some variation of a nonequi ...

A spinoff of the anti-war and civil rights movements of the

A spinoff of the anti-war and civil rights movements of the 1960s that affected women was? increased desire to return to the security of homes and families decreased political involvement. the birth of the women's libera ...

While some countries tend to favor expansion of the

While some countries tend to favor expansion of the European Union, others generally oppose it. Entering a union agreement with other countries has both benefits and drawbacks for each member country. In what ways do you ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro