HCAD 5220
Fall 2015
Ed Schumacher
Homework 2
Due Tuesday September 8th (note that the 7th is Labor Day)
1.In the Homework2.xls file the worksheet titled “San Antonio Inpatient Market”
contains patient level data for discharges across all hospitals in San Antonio for
2011.
a. Create a pivot table that shows the overall market share by system. The table
should show both total discharges and market share. Sort by market share in
descending order. What system has the largest market share?
b.Next show market share by system by hospital. Show total discharges and
proportion of hospital to system discharges. (value field settings, show
values as % of Parent Row Total). Filter out the “Out of Area” patients.
What percentage of Baptist Health System’s patients come from North
Central Baptist?
c. What system is the market leader in Neonatology? What percent of the
market do they have? Drill down further to show how neonatology breaks
down by hospital for this system. How does the payer mix differ across
these hospitals? What do you learn from this?
d.Now examine the flow of patients outside the San Antonio Market. What
are the top 5 services for which patients are going to hospitals outside of
San Antonio? What are the main hospitals that these patients are going
to? Do you notice anything odd here?
e. Find the zipcodes that make up a given hospital’s Primary Service Area
(top 60% of charges) and Secondary Service Area (next 20%) for a given
service line. You can use sliders or filters. For each zip code, show the
total number of cases, total charges, the percent of grand total charges, the
cumulative total charges (running total in) and the percent cumulative total
(%running total in). Use conditional formatting to turn the zip codes of
the primary service area dark green and the secondary service area light
green.
i. Compare the primary orthopedics markets for Methodist Stone
Oak and North Central Baptist. What does this tell you?
ii. Is there any evidence of cannibalism within the hospitals of
Methodist health system in the general surgery market? Explain.
2. In the Homework2.xls file the worksheet “Physician Readmissions” contains a sample
of data from a group of physicians who see patients in your hospital. You would like to
understand which doctors are have readmissions more than the norm and which are less
than the norm.
a. Calculate proportion of each doctor’s patients that end up being readmitted into
the hospital.
b. Calculate the overall proportion of patients that are readmitted.
c. Construct a 95% confidence interval for each doctor of their “true” readmission
rate.
d. Construct a graph that shows each doctor’s readmission rate (in ascending order),
the minimum and maximum of the confidence interval, as well as the overall
proportion of readmissions. (Write the command for the minimum to be zero if
the calculated value is negative).
e. Which doctors can you say are above and below the norm? Explain.