45 While a "carnivore" diet may have short-term weight-loss benefits, there is also data that it poses heath risks. Consider the hypothetical sample of individualsshown where some eat only a carnivore diet and other don't, and we identify how many in each group have clinical signs of elevated cholesterol levels.Consider eating the carnivore diet to be the risk factor and elevated cholesterol as the focal outcome.ElevatedTypicalCarnivores5178Others4393Which of the following is the closest to the risk difference?0.0030.1910.0190.0620.0080.079oo0.163

Answered: While a "carnivore" diet may have…

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter4: Writing Linear Equations

Section: Chapter Questions

Problem 14CR

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What is an experiment?
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In a study to determine if using low-intensity laser therapy reduces pain for orthodontic patients who are fitted with new braces, patients were randomly assigned to either a control group (who did not receive laser treatment) or an experimental group who did receive laser treatment.† The researchers found that the mean pain rating was lower for those in the laser treatment group than for those in the control group both two days and six days after receiving braces. The researchers used these data to determine if there was evidence to support the claim that the mean pain rating is lower for patients who receive the laser treatment. Answer the four key questions. Q, Question Type: Estimation or hypothesis testing? estimationhypothesis testing S, Study Type: Sample data or experiment data? sample dataexperiment data T, Type of Data: One variable or two? Categorical or numerical? one categorical variableone numerical variable two categorical variablestwo numerical variables…
A Canadian longitudinal study1 examines whether giving antibiotics in infancy increases the likelihood that the child will be overweight later in life. Prescription records were examined to determine whether or not antibiotics were prescribed during the first year of a child's life, and each child was classified as overweight or not at age 12. The researchers compared the proportion overweight in each group. The study concludes that: "Infants receiving antibiotics in the first year of life were more likely to be overweight later in childhood compared with those who were unexposed (32.4% versus 18.2% at age 12, P=0.002)." (h) What is the value of the sample statistic?Value:
The Cochran–Mantel–Haenszel method is a technique that generates an estimate of an association between a risk factor or exposure and an outcome accounting for confounding. True False
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A researcher collects data from a sample of children with Crohn's disease and then compares that data to data collected from a sample of children without the disease. What type of study design is the researcher using for this study? Cohort Cross-sectional Quasi-experimental Case-Control
Do less agreeable Facebook users tend to spend more time on Facebook? A study (Ivcevic and Ambady, 2013) aimed to investigate various facets of use of the social networking website Facebook. Previous research suggested that individuals with poorer face-to-face social skills may find internet-based social platforms less daunting, so as part of the study Ivcevic and Ambady investigated whether an individual's volume of Facebook use was associated with levels of "agreeableness". The subjects were 99 university students who all had a Facebook page. The subjects agreed to allowing the content of their Facebook pages to be downloaded on six separate occasions over a three-week period. As part of the data gathered on each subject, each of the 99 were individually rated by a selected friend on an "agreeableness" scale (based on average ratings on a questionnaire where all responses were on a Likert scale), with 1 being "low" and 5 "high". We consider here the relationship between "friend…

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