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Recent research into the cost of various medical procedures has shown the impact of certain complications encountered in surgery on the total cost of a
Recent research into the cost of various medical procedures has shown the impact of certain complications encountered in surgery on the total cost of a patients stay in the hospital. The researchers used regression analysis and found the following results: |
Total cost for patient = Constant, plus |
a Length of stay (measured in days), plus |
b Presence of one or more complications (= 1 if true, 0 if false), plus |
c Use of a laparoscope (= 1 if true, 0 if false) |
Where: |
a, b, c are coefficients of the regression model, and | |
The laparoscope is an instrument somewhat like a miniature telescope with a fiber optic system which brings light into the abdomen. It is about as big around as a fountain pen and twice as long. |
The research, based on 51 patients, showed the following regression results: |
R-squared: 56% |
Constant term: $3,752 |
Coefficients and t-values for independent variables: |
Length of Stay | Complication | Laparoscope | ||
Coefficient | $675 | $1,951 | $924 | |
t-value | 10.19 | 4.72 | 2.56 | |
Required: |
1. | What is the estimated cost for a patient whose surgery has complications and who stays in the hospital five days, and whose surgery requires a laparoscope? |
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