Table 2.

Postoperative outcomes of each S100A4 group

	S100A4 high group (≥ 17.13 ng/ml) n = 50	S100A4 low group (< 17.13 ng/ml) n = 112	P value
AE of IP+ (any grade)	14 (28.0%)	2 (1.8%)	< 0.001
AE of IP+ (Grade IIIa)	8 (16.0%)	0 (0%)	< 0.001
Respiratory complications+ (any grade)	21 (42.0%)	23 (20.5%)	0.005
Respiratory complications+ (grade IIIa)	14 (28.0%)	17 (15.2%)	0.061
30-days mortality rate	4 (8.0%)	0 (0%)	0.002
90-days mortality rate	8 (16.0%)	0 (0%)	< 0.001
1-year OS rate	75.3%	92.3%	0.003

S100A4 S100 calcium-binding protein A4, AE acute exacerbation, IP interstitial pneumonia, OS overall survival