Hospital A is examining the effect of high and low intensity rehabilitation for hip replacement patients....

Hospital A is examining the effect of high and low intensity rehabilitation for hip replacement patients. Patient mobility postreplacement is based on patient self-reports and is categorized as improved, no change, or diminished. High-intensity rehabilitation is a ten-week regime; low-intensity is four weeks.

Observed	Improved	No Change	Diminished	Total
Low-Intensity Rehab	121	22	12	155
High-Intensity Rehab	143	17	9	169
Total	264	39	21	324
Marginal probability	81.5%	12.0%	6.5%


Expected	Improved	No Change	Diminished	Total
Low-Intensity Rehab
High-Intensity Rehab
Total


Chitest
Chiinv - test stat
Chiinv - critical value

Expert Solution

using excel>Addin<phtat>multiple sample test

we have

Chi-Square Test

Observed Frequencies
	Column variable			Calculations
Observed	Improved	No Change	Diminished	Total	fo-fe
Low-Intensity Rehab	121	22	12	155	-5.2963	3.342593	1.953704
High-Intensity Rehab	143	17	9	169	5.296296	-3.34259	-1.9537
Total	264	39	21	324

Expected Frequencies
	Column variable
Expected	Improved	No Change	Diminished	Total	(fo-fe)^2/fe
Low-Intensity Rehab	126.2963	18.65741	10.0463	155	0.222103	0.598847	0.379937
High-Intensity Rehab	137.7037	20.34259	10.9537	169	0.203704	0.549238	0.348463
Total	264	39	21	324

Data
Level of Significance	0.05
Number of Rows	2
Number of Columns	3
Degrees of Freedom	2

Results
Critical Value	5.991465
Chi-Square Test Statistic	2.302291
*p-Value*	0.316274
Do not reject the null hypothesis

Observed	Improved	No Change	Diminished	Total
Low-Intensity Rehab	121	22	12	155
High-Intensity Rehab	143	17	9	169
Total	264	39	21	324
Marginal probability	81.5%	12.0%	6.5%


Expected	Improved	No Change	Diminished	Total
Low-Intensity Rehab	126.2963	18.65741	10.0463	155
High-Intensity Rehab	137.7037	20.34259	10.9537	169
Total	264	39	21	324

Chitest
Chiinv - test stat	5.9912
Chiinv - critical value	2.302

orchestra answered 3 years ago

In a population survey of patients in a rehabilitation hospital, the mean length of stay in...

In a population survey of patients in a rehabilitation hospital, the mean length of stay in the hospital was 12.0 weeks with a standard deviation equal to 1.0 week. The distribution was normally distributed. What is the percentile rank for each of the following z scores? Enter the percentile rank to the right of each z score. Assume a normal distribution. a) 1.23 _____ b) 0.89 ______ c) -0.46 _____ d) -1.00 ______

A40. The intensity of industry rivalry will be low if the Growth Rate is high. a) ...

A40. The intensity of industry rivalry will be low if the Growth Rate is high. a) True b) False A41. Which of the following is a usual corporate goal? a) Sales maximization b) Market share maximization c) Earnings per share growth d) All of the above e) None of the above A42. In finance, which of the following is a type of Arbitrage? a) Lending at a part-fixed and part-variable interest rate. b) Limited risk lending to low-income individuals c) ...

Planning for our patients during times of transitions (for example hospital to home, home to rehabilitation...

Planning for our patients during times of transitions (for example hospital to home, home to rehabilitation facility) involves collaboration with a number of healthcare professionals. Please address the following questions: How does your facility promote interprofessional collaboration during times of patient transitions? What is the role of the nurse inpatient transitions? What gaps can you identify in this process related to the quality of care? (If you are not currently in practice, please use a previous role or clinical experience...

Suppose you computed the profit per surgery for each of 300 patients who underwent hip replacement...

Suppose you computed the profit per surgery for each of 300 patients who underwent hip replacement surgery at your hospital. Profit per surgery is approximately normally distributed and the mean and standard error of profit per surgery in this sample are $97 and $49, respectively. Recall that the 95th percentile of the standard normal distribution is 1.65 and the 97.5th percentile of the standard normal distribution is 1.96. The lower bound of the 95% confidence interval of profit per surgery...

Aspartame is a low-calorie, high-intensity sweetener. It was discovered (by accident) by a research scientist at...

Aspartame is a low-calorie, high-intensity sweetener. It was discovered (by accident) by a research scientist at G.D. Searle & Co. who was working on an anti-ulcer drug. Use of aspartame in soft drinks was approved by the US Food and Drug Administration in 1983. Searle extended the original patent to 1987 in Europe and 1992 in the US. In 1985, Monsanto acquired Searle, including the aspartame patent, and began selling the soft- drink version under the brand name “Nutrasweet.” The...

In a large teaching hospital, there is a high rate of readmission for patients with congestive...

In a large teaching hospital, there is a high rate of readmission for patients with congestive heart failure (CHF) who are being treated at the facility. The chief nursing officer (CNO) wants to know the cause of the readmissions, as the rate at this facility is almost twice that of competing healthcare entities in the area. The CNO works with the nursing researchers at the university to address this situation. The researchers begin to scour the electronic health records (EHRs)...

what foods should patients avoid on this diet?: Low sodium, low cholesterol, low carbs, high fiber,...

what foods should patients avoid on this diet?: Low sodium, low cholesterol, low carbs, high fiber, low fiber, high protein, low protein, high potassium, low potassium

1. 2. A researcher studied the influence of intensity of room illumination (low, medium, and high) on...

1. 2. A researcher studied the influence of intensity of room illumination (low, medium, and high) on reading speed among fifth graders. Also, children were classified as "good" or "poor" readers from achievement test scores. Each group of children read 700 word passages under all three levels of illumination (three reading trials). The order of trials for each child was randomly determined. 1. Identify the design (e.g., 2 X 2 factorial). 2. Identify the total number of conditions. 3. Identify the...

Describe the effect of low pH and high soil density on root growth and function

As a result of virus and its effect to various groups (high income vs low income...

As a result of virus and its effect to various groups (high income vs low income population) in the context of food security, how would you conduct a survey to test the underlying idea of differential effects across income groups (high earners vs low earners). You can use the following terms to answer the question througugly. Data production, Causal effects, Statistical inference, Randomness Statistical data, The law of large values, Central limit theorem, Confidence interval, Hypothesis testing p-value.

Question