Table 4.

Medium values “the duration of hospital stay” variable takes when modifying with a unit the “post-operatory complications” and “age” factorial variables in open surgery

Coefficients a, b
Model		Unstandardized Coefficients		Standardized Coefficients	t	Sig.	95,0% Confidence Interval for B
		B	Std. Error	Beta			Lower Bound	Upper Bound
1	(Constant)	6,785	1,373		5,669	,000	5,067	10,502
	Post-operatory complications	-1,844	,545	-,283	-3,384	,001	-2,923	-,766
	Age	,035	,012	,246	2,950	,004	,012	,059
a. Dependant variable: LENGTH OF HOSPITAL STAY (DAYS)
b. Selected cases: SURGERY TECHNIQUE = OPEN