KContrast bath treatmentsuse the immersion of aninjured limb alternately inwater of two contrastingtemperatures. Those whouse the method claim that itcan reduce swelling.Researchers comparedthree treatments: (1)contrast baths andexercise, (2) contrast bathsalone, and (3) exercisealone. They report theboxplots to the right,(...Change in Volume (cc)40-20-0--20--40-OHH• HTHTHTreatment3a) The researchers conclude that the differences were notstatistically significant. Explain what that means in context.QoOA. There is no evidence that the changes in swelling weredifferent among the three treatments. The experimentshould be run again with more subjects.OB. There is evidence that the changes in swelling weredifferent among the three treatments, but not enoughdata to tell which treatment was most effective. All threetreatments appear to cause an unknown but unequalreduction in swelling.OC. There is no evidence that the changes in swelling weredifferent among the three treatments. Contrast baths,with or without exercise, did not appear to reduceswelling any more than exercise alone.b) Suppose it's stated that the study was randomized andcontrolled. Explain what that probably means for this study.OD. There is evidence that the three treatments have noeffect since the differences between the isolatedtreatments and the combined treatment are notstatistically different. All three treatments appear to beuseless for reducing swelling.OA. The choice of subjects was controlled, each subjectwas carefully vetted. The length of time each subjectunderwent their treatment was randomized. Contrast bath treatmentsControlled. Explain wildl al pivvaviy means IOT HIS Study.OA. The choice of subjects was controlled, each subjectwas carefully vetted. The length of time each subjectunderwent their treatment was randomized.B. The number of subjects, the assignment of subjects,and the duration of treatment for each subject wasrandomized. The controlled aspect simply refers to thefact that this experiment was planned and designed.OC. Patients were assigned to treatments at random. Theexercise treatment was the control group.O D. Random numbers of patients were assigned to eachtreatment. The amount of time each subject underwenttheir treatment was kept controlled and equal.c) The study did not use a placebo treatment. What was doneinstead? Do you think that was an appropriate choice? Explain.OA. Instead of a placebo treatment the exercise group wasused as a control group. There can be no substitute fora true placebo group and it's likely that the data isuseless without it.B. A two factor experiment was performed in lieu of acontrol group, which seems inappropriate as there is nomeasurement of what would be considered thebaseline. A randomized block design with a block ofpeople without injury and a block with injury shouldhave undergone the same three treatments and had theresults compared across blocks for each treatmentgroup.C. Instead of a placebo treatment the exercise group wasused as a control group, which seems appropriateassuming exercise is the standard treatment thatpatients would have received otherwise.OD. A two factor experiment was performed in lieu of acontrol group, which seems inappropriate as there is nomeasurement of what would be considered thebaseline. Instead a group with no treatment shouldhave had their swelling measured as well.

Introduction: It is required to use the given information, along with the boxplots, to answer the…

Contrast bath treatments use the immersion of an injured limb alternately in water of two contrasting temperatures. Those who use the method claim that it can reduce swelling. Researchers compared three treatments: (1) contrast baths and exercise, (2) contrast baths alone, and (3) exercise alone. They report the boxplots to the right, ... Change in Volume (cc) 40- 20- 0- -20 -40- HIH HT O ▬▬ 1 2 3 Treatment a) The researchers conclude that the differences were not statistically significant. Explain what that means in context. o OA. There is no evidence that the changes in swelling were different among the three treatments. The experiment should be run again with more subjects. 1 OB. There is evidence that the changes in swelling were different among the three treatments, but not enough data to tell which treatment was most effective. All three treatments appear to cause an unknown but unequal reduction in swelling. OD. There is evidence that the three treatments have no effect since the differences between the isolated treatments and the combined treatment are not OC. There is no evidence that the changes in swelling were different among the three treatments. Contrast baths, with or without exercise, did not appear to reduce swelling any more than exercise alone. b) Suppose it's stated that the study was randomized and controlled. Explain what that probably means for this study. statistically different. All three treatments appear to be useless for reducing swelling. OA. The choice of subjects was controlled, each subject was carefully vetted. The length of time each subject underwent their treatment was randomized.

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P