Spinal epidural abscess as predicting factor for the necessity of early surgical intervention in patients with pyogenic spondylitis

Table 4 Univariate regression model for identifying risk factors for surgery

	Odds ratio	Lower bound of 95% CI for Odds ratio^*	Upper bound of 95% CI for Odds ratio^*	P-value
WBC at admission	1.0001	1	1.0002	0.043
CRP at admission	1.0318	0.9826	1.0834	0.209
%Seg at admission	1.0457	0.9922	1.1021	0.0956
WBC_Cut_11080	3.6833	1.0624	12.7705	0.0398
CRP_cut_5.61 (mg/dL)	7.2727	1.683	31.4266	0.0079
%Seg_cut_76.35 (%)	3.6833	1.0624	12.7705	0.0398
BT at admission	3.5422	1.3432	9.3411	0.0106
BT_cut_37.05 (°)	7.5	1.4232	39.5232	0.0175
Staphylococcus infection	2.6494	0.7966	8.8112	0.112
Concomitant infection	1.9341	0.5841	6.4042	0.2802
Epidural abscess	37.8	6.5266	218.9249	5.051 × 10 ^− 05

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