What is the estimated cost for a patient whose surgery has complications and who stays in the hospital 3 days and whose surgery requires a laparoscope?

a x length of stay (measured in days), plus

b x Presence of one or more complications (= 1 if true, 0 if false), plus

c x Use of a laparoscope (= 1 if true, 0 if false)

The research, based on 58 patients, showed the following regression results:

R-squared: 57%

constant term: $3,124

Coefficient Length of stay $791 complications $1,767 Laparoscope $958

t-value length of stay 10.25 complications 5.86 Laparoscope 3.38