Table 4

Gini feature importance for prediction of in-hospital death following surgical treatment of vertebral fractures in patients with AS and DISH.

Outcome and Features	Average Gini Feature Importance	Mean ± SD or % (n)		P
Outcome and Features	Average Gini Feature Importance	Survived to Discharge	In-Hospital Death	P
Age	0.172	72.89 ± 10.17	77.34 ± 7.69	<0.001
Days from admission to surgery	0.101	2.36 ± 2.72	2.14 ± 1.58	0.828
Cervical fracture	0.0646	29.4% (870)	2.5% (75)	<0.001
Spinal cord injury	0.0567	11.5% (340)	1.9% (55)	<0.001
AS of lumbar spine	0.0443	4.4% (130)	0.8% (25)	<0.001
Hypertension with end-organ complications	0.0368	22.5% (665)	2.5% (75)	<0.001
Perivascular disease	0.0363	7.6% (225)	0.7% (20)	0.046
Obesity	0.0344	25.0% (740)	1.2% (35)	0.203
Fusion >2 evels	0.0272	52.2% (1545)	2.5% (75)	0.04
Hispanic ethnicity	0.0225	7.6% (225)	0.7% (20)	0.045