Table 4. Multivariate logistic regression analysis results for mortality after Stage I operations.

Variable	Estimate	Standard error	Z	p
1	-2.60	2.09	-1.24	0.21
2	-0.03	0.05	-0.73	0.46
3	0.0002	0.0006	0.38	0.70
4	0.28	0.58	0.49	0.62
5	1.42	0.78	1.82	0.07
6	1.70	0.57	2.97	0.003*
7	3.20	1.48	2.17	0.03*
8	-1.42	0.90	-1.58	0.11
9	-1.29	1.16	-1.12	0.26
10	0.17	0.54	0.31	0.76