Chapter 12, Problem 43P

Gastroenterology

In Table 12.39, we present data relating protein concentration to pancreatic function as measured by trypsin secretion among patients with cystic fibrosis [16].

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?