Table 2.

Group differences associated with conversion in both groups

Predictors of conversion	No conversion n = 74	Conversion n = 21	p value (p < 0.05)
Age > 65	53 (70.6%)	13 (61.9%)	0.48
BMI > 25	39 (52.0%)	11 (52.4%)	0.98
ASA (IQR)	2 (1–3)	2 (1–2)	0.20
Tumor size > 50 mm	41 (54.6%)	9 (42.9%)	0.38
Central tumor	27 (36.4%)	14 (66.7%)	0.046
Pneumonectomy	8 (10.8%)	9 (42.9%)	< 0.001
Lobectomy	57 (77.0%)	11 (52.4%)	0.025
General invasion	29 (38.6)	15 (71.4%)	0.009
Pleural invasion	20 (26.7%)	6 (28.6%)	0.47
Vascular invasion	5 (6.7%)	7 (33.3%)	0.001
Left upper lobe	14 (18.7%)	12 (57.1%)	< 0.001
Squamous cell (histology)	25 (33.3%)	17 (81.0%)	< 0.001
Induction therapy	5 (6.8%)	5 (23.8%)	0.025
Additional Surgery	3 (4.1%)	5 (23.8%)	0.004

Statistically significant values (p < 0.05) in bold