Table 3.

The Results of Logistic Regression Analysis

Influencing Factors	β	Standard Error	Wald	df	P	OR (95% CI)
Gender	−1.995	1.047	3.751	1	0.046	0.135(0.018, 0.836)
≥ 51 years old			8.139	3	0.043
≤ 30 years old	−1.966	1.040	3.570	1	0.059	0.140(0.018, 1.076)
31–40 years old	−2.229	0.975	5.228	1	0.022	0.108(0.016, 0.727)
41–50 years old	−4.015	1.479	7.368	1	0.007	0.018(0.001, 0.328)
Vessels and thyroid			1.404	1	0.236
Abdomen	−1.286	1.086	1.404	1	0.236	0.276(0.033, 2.320)
Head and spine	−0.966	0.705	1.846	1	0.172	0.389(0.113, 1.651)
Other surgery department			3.127	2	0.209
Obstetrics & Gynecology	−1.547	2.038	0.576	1	0.448	0.213(0.004, 11.555)
Neurosurgery	−0.984	0.709	1.925	1	0.165	0.374(0.093, 1.501)
Constant term	3.122	1.906	2.684	1	0.101