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Table 1 Univariate analysis of categorical data using Fisher's exact test.

From: Systemic air embolism during percutaneous core needle biopsy of the lung: frequency and risk factors

  Patients with air embolism Patients without air embolism  
  Factor present Factor not present % Factor present Factor not present % Significance
FET
Prone position 19 4 82.6 269 318 45.8 0.0005 (s)
Lobar location: Upper lobe, middle lobe or lingular segments 10 13 43.5 391 196 66.6 0.0261 (s)
Bleeding of any extent visible 18 5 78.3 382 205 65.01 0.053 (ns)
Intubation anesthesia 17 6 74 308 279 52.5 0.0543 (ns)
Mycosis present 2 21 8.7 16 571 2.7 0.1443 (ns)
Necrosis present within the lesion 6 17 26.0 88 499 15 0.1467 (ns)
Needle path through ventilated lung 20 3 87 452 135 77 0.3203 (ns)
Hemoptysis 1 22 4.3 11 576 1.8 0.3722 (ns)
Pneumothorax 5 18 21.8 89 498 15.1 0.3784 (ns)
Gender (female) 8 15 34.8 244 343 41.6 0.6669 (ns)
Fibrin glue line complete 17 6 74 404 183 69 0.8185 (ns)
Vasculitis present 0 23 0 6 581 1.02 1 (ns)
  1. Abbreviations: FET-Fisher's exact test; ns-not significant; s-significant