Table 1.

Logistical regression analysis between subject factors

Major morbiditya	β	SE	Wald (χ2)	df	P	eβ (odds ratio)
Postop SNO‐Hbb	–1.437	0.693	4.293	1	0.03	0.238
Constant	12.297	5.658	4.723	1	0.30
Goodness of fit test	R2		χ2	df	P
Hosmer and Lemeshow test			8.088	8	0.425
Cox and Snell	0.445
Nagelkerke	0.602

^aMajor morbidity was coded as yes or no.

^bPostoperative S‐nitrosohemoglobin.