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WebAssign for Rosner's Fundamentals of Biostatistics, 8th Edition [Instant Access], Single-Term
8th Edition
ISBN: 9780357452905
Author: Rosner
Publisher: Cengage Learning US
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Chapter 12, Problem 43P
Gastroenterology
In Table 12.39, we present data relating protein concentration to pancreatic
Table 12.39 Relationship between protein concentration (mg/mL) of duodenal secretions to pancreatic function as measured by trypsin secretion [U/(kg/hr)]
Perform the test mentioned in Problem 12.42, and report a p-value. How do your results compare with a parametric analysis of the data?
If we do not want to assume normality for these distributions, then what statistical procedure can be used to compare the three groups?
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OphthalmologyRetinitis pigmentosa (RP) is a hereditary ocular diseasein which patches of pigment appear on the retina, potentially resulting in substantial vision loss and in somecases complete blindness. An important issue is how fastthe subjects decline. Visual field is an important measureof area of vision, which is measured in degree2. A visualfield area for a normal person is around 11,000 degree2.The longitudinal data in Table 11.29 were provided by anindividual patient.Table 11.29 Longitudinal visual field data forone RP patientTime Visual field area lnVisit (yr) (degree2) (visual field area)1 0 3059 8.032 1 3053 8.023 2 1418 7.264 3 1692 7.435 4 1978 7.596 5 1567 7.367 6 1919 7.568 7 1998 7.609 11 1648 7.4110 13 1721 7.4511 15 1264 7.14mean 6.09 1938 7.532sd 4.97 597 0.280Suppose the rate of change of ln (visual field) is a linearfunction of follow-up time.11.103 Write down a linear regression model that summarizes this relationship.11.104 Fit the regression line using…
11. Below is a table from the journal article "Acute Effects of Electronic Cigarette Aerosol Inhalation on
Vascular Function Detected at Quantitative MRI" by Caporale, et. al. from Radiology 2019. Nonsmokers
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Table 4: Comparisons before and after E-cigarette Vaping
MRI Parameters
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P Value
Peripheral vascular reactivity
Dynamic superficial femoral vein oximetry (SvO,)
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52 2
7.6 0.2
65 2
<.001
9.1 0.4
3.0 0.2
19 2
.001
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Overshoot (%HbO,)
Peak-to-peak SvO, (%HbO_)
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Ophthalmology Retinitis pigmentosa (RP) is a hereditary ocular disease in which patches of pigment appear on the retina, potentially resulting in substantial vision loss and in some cases complete blindness. An important issue is how fast the subjects decline. Visual field is an important measure of area of vision, which is measured in degree2. A visual field area for a normal person is around 11,000 degree2. The longitudinal data in Table 11.29 were provided by an individual patient. tablE 11.29 Longitudinal visual field data for one RP patient Time Visual field area ln Visit (yr) (degree2) (visual field area) 1 0 3059 8.03 2 1 3053 8.02 3 2 1418 7.26 4 3 1692 7.43 5 4 1978 7.59 6 5 1567 7.36 7 6 1919 7.56 8 7 1998 7.60 9 11 1648 7.41 10 13 1721 7.45 11 15 1264 7.14 mean 6.09 1938 7.532 sd 4.97 597 0.280 Suppose the rate of change of ln (visual field) is a linear function of follow-up time. 11.103 Write down a linear regression model that summarizes…
Chapter 12 Solutions
WebAssign for Rosner's Fundamentals of Biostatistics, 8th Edition [Instant Access], Single-Term
Ch. 12 - Nutrition Researchers compared protein intake...Ch. 12 - Nutrition Researchers compared protein intake...Ch. 12 - Prob. 3PCh. 12 - Prob. 4PCh. 12 - Prob. 5PCh. 12 - Pulmonary Disease Twenty-two young asthmatic...Ch. 12 - Pulmonary Disease Twenty-two young asthmatic...Ch. 12 - Prob. 8PCh. 12 - Prob. 32PCh. 12 - Gastroenterology In Table 12.39, we present data...
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