Table 3.

Comparison of the surgical and clinical outcomes

Variables	CVD-ILD group (n = 16)	IIPs group (n = 70)	p value*
Operative approach			0.766
VATS	12 (75%)	47 (67.1%)
Thoracotomy	4 (25%)	23 (32.9%)
Operative method			0.418
Wedge resection	3 (18.7%)	18 (25.7%)
Segmentectomy	5 (31.3%)	8 (11.5%)
Lobectomy	8 (50%)	40 (57.1%)
Bilobectomy	0	3 (4.3%)
Pneumonectomy	0	1 (1.4%)
Operative time (min)	163.5 (115.8)**	189 (117.5)**	0.682
Loss (mL)	92.5 (340.5)**	145 (281)**	0.915
Intraoperative complication	0	2 (2.9%)	0.494
Duration of drainage (days)	4 (3)**	4 (3)**	0.0777
Length of stay (days)	11 (10.5)**	12 (10)**	0.96
Postoperative complication
Overall	4 (25%)	19 (27.1%)	0.861
AE of ILD	1 (6.3%)	6 (8.6%)	0.759
Prolonged air leakage	3 (18.8%)	6 (8.6%)	0.23
Pneumonia	0	3 (4.3%)	0.399
BPF	2 (12.5%)	0	0.0028
Reintubation	1 (6.3%)	2 (2.9%)	0.505
Tracheostomy	1 (6.3%)	2 (2.9%)	0.505
Arrhythmia	1 (6.3%)	1 (1.4%)	0.248
Others	0	4 (5.7%)	0.328
30-day mortality	1 (6.3%)	2 (2.9%)	0.505
90-day mortality	1 (6.3%)	4 (5.7%)	0.934

*p values were calculated by Fisher’s exact test or the Chi-square test for categorical data, or Mann–Whitney’s U test for continuous data

**Continuous variables are expressed as the median and interquartile ranges which are expressed in parenthesis, and the categorical variables are expressed as numbers and percentages (%)

CVD-ILD indicates collagen vascular disease-associated interstitial lung disease, IIPs idiopathic interstitial pneumonias, VATS video-assisted thoracoscopic surgery, AE acute exacerbation, ILD interstitial lung disease, BPF bronchopleural fistula