Quantifying the effect of complications on patient flow, costs and surgical throughputs

Table 2 Marginal effect of complications on postoperative LOS

Variable^a	Coefficient	SE	Marginal effect (days)	P-value
Cardiac complications
Ventricular Arrhythmia	0.08	0.04	0.94	.025
Cardiac arrest	−0.16	0.07	−1.59	.026
New Atrial Arrhythmia	0.02	0.04	0.27	.549
Other cardiac complications	0.19	0.06	2.28	.001
Neurological complications
Stroke permanent	1.17	0.04	22.96	< .001
Neuro psychiatry	−0.06	0.06	−0.59	.360
Other neurological complications	0.25	0.06	2.94	< .001
Pulmonary complications
Prolonged ventilation >24 h	0.39	0.04	4.70	< .001
Pneumonia	0.49	0.05	6.33	< .001
Other pulmonary complications	0.76	0.06	11.34	< .001
Infection complications
Sternal deep	0.35	0.05	4.30	< .001
Septicaemia	1.18	0.07	22.90	< .001
Leg wound	0.26	0.07	3.09	< .001
Sternal superficial	0.34	0.06	4.11	< .001
Other infection	0.41	0.06	5.19	< .001
Constant	1.78	.099		< .001

^aAll variables are recorded as binary (i.e. 1 for complication and 0 for absence of complication)

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