The test of hypothesis
presented in this case used the upper limit of the Stage 1 kidney
insufficiency range. Repeat the analysis this time using the lower
limit of the Stage 1 range (1.6). Does your conclusion change? Which
value do you recommend using to define Stage 1 kidney insufficiency?
Explain why.
Given the results of
the analyses presented in this case, what research questions would
you recommend to pursue next to further understand AKI among these
hospitalized patients? What statistical methods would you use to
address these research questions?
Analyze the length of
stay variable in the creatinine data set.
Create a histogram for
this variable and choose an appropriate measure of centrality for
the length of stay distribution.
Select a hypothesized
value and an associated test of hypothesis. Conduct the test and
verify that the test assumptions are satisfied.