GastroenterologyWe present data relating protein concentration to pancreatic function as measured by trypsin secretion among patients with cystic fibrosis.

Chaya Galloway 2020-12-02 Answered

Gastroenterology
We present data relating protein concentration to pancreatic function as measured by trypsin secretion among patients with cystic fibrosis.
If we do not want to assume normality for these distributions, then what statistical procedure can be used to compare the three groups?
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?
Relationship between protein concentration (mg/mL) of duodenal secretions to pancreatic function as measured by trypsin secretion:
[U/kghr]
Tapsin secreton [UGA]
 50
Subject numberProtetion concentration11.722.032.042.254.064.075.086.797.8
51  1000
Subject numberProtetion concentration11.422.432.443.354.464.776.787.999.51011.7
> 1000
Subject numberProtetion concentration12.923.834.444.755.565.677.489.4910.3

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Answered 2020-12-03 Author has 108 answers
Step 1 Given data is:
Tapsin secreton [U/(kg/hr)]
 50
Subject numberProtetion concentration11.722.032.042.254.064.075.086.797.8
51  1000
Subject numberProtetion concentration11.422.432.443.354.464.776.787.999.51011.7
> 1000
Subject numberProtetion concentration12.923.834.444.755.565.677.489.4910.3
Step 2
1) By using Kruskal-Wallis test to compare 3 groups we get, Combining score of all the three groups, arranging them into ascending order and assigning them ra
.
A=group 1  50
B=group 2 =51  1000
C=group 3 =  1000
ObservationRankGroups1.41B1.72A23.5A23.5A2.25A2.46.5B2.46.5B2.98C3.39B3.810C411.5A411.5A4.413.5B4.413.5C4.715.5B4.715.5C517.5A517.5C5.619C6.720.5A6.720.5B7.422C7.623B7.824A9.425C9.526B10.327C11.728B
nA=9
nB=10
nC=9
n=nA + nB + nC=9 + 10 + 9=28
RA= of rafor group A=2 + 3.5 + 3.5 + 5 + 11.5 + 11.5 + 17.5 + 20.5 + 24=99

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