Table 6. Multivariate logistic regression for postoperative death.

	Pos-operative death			Adjusted for patient age (1-yearincrease)
	OR	95%CI	p-value	OR	95%CI	p-value
Neoadjuvant therapy	0.907	0.186–4.532	0.901	1.137	1.013–1.319	0.053
Neoadjuvant therapy complete response	1.167	0.041–20.933	0.916	1.182	0.962–1.606	0.193
Clinical T staging	1.589	0.776–3.289	0.197	1.154	1.022–1.352	0.042
Clinical N staging	1.917	1.169–3.313	0.012	1.172	1.028–1.400	0.041
Number of lymph nodes dissected	0.919	0.775–1.048	0.259	1.156	1.022–1.360	0.043
Pneumonia	5.436	1.067–40.89	0.056	1.123	1.001–1.303	0.079
Treatment response	0.990	0.678–1.444	0.970	1.138	1.013–1.321	0.053
Surgery year (1-year increase)	0.612	0.372–0.920	0.029	1.249	1.069–1.529	0.014

OR: odds ratio; CI: confidence interval