Table 4

Logistic regression model using explorative selection criteria with the target parameter "SAE".

Model

Selection criteria

Wald

p

Assessment

Needle penetration depth in the tumor (Needle tip not in the tumor is risk factor)

2

Explorative

9.1

0.002

Most important independent risk factor

Intubation anesthesia (Anesthesia is risk factor)

2

Explorative

6.8

0.009

Independent risk factor

Height above the level of the left atrium (Height is risk factor)

2

Explorative

6.0

0.014

Independent risk factor

Needle angle to the tumor surface (More acute angle may be risk factor)

2

Explorative

4.6

0.032

Independent risk factor

Prone or supine position (prone position is risk factor)

2

Explorative

3.3

0.067

Independent risk factor

Needle path through ventilated lung

2

Explorative

2.9

0.085

Independent risk factor

Freund et al. BMC Pulmonary Medicine 2012 12:2   doi:10.1186/1471-2466-12-2