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Table 3 Univariate analysis result of variables

From: Incidence and risk factors of spinal epidural hemorrhage after spine surgery: a cross-sectional retrospective analysis of a national database

VariablesP-value*
Age0.03
Sex0.12‡
Total medical cost0.00
Duration of hospital stay0.00
Insurance types0.24†
Spine surgery type: lumbar0.00
Spine surgery approach: anterior0.00
Infection0.18‡
Diabetes0.34†
Hypertension0.01
Use of NSAIDs0.01
Invasive procedures0.39†
Bleeding factors0.00
Trauma0.31†
Anticoagulant use0.51†
Surgical time: >  2 h0.00
Blood loss: >  0.5 L0.00
Type of hospital: small hospitals0.09‡
Number of hospital beds: >  2000.03
Location of hospital: rural area0.00
  1. *Variables with a dagger (†) mean that the P-value of the corresponding variable is not statistically significant. Variables with a double dagger (‡) means that the P-value of the corresponding variable is located between 0.05 and 0.20, indicating marginal significance. A P-value of 0.00 indicates a P-value < 0.001