Table 1. Patient demographics and procedure characteristics for patients undergoing CRS/HIPEC with and without diaphragm resection.

Characteristic	Diaphragm resection	No diaphragm resection	p
Age, mean (range), year	51.5	52.7	0.27
ECOG performancestatus, n (%) (n = 1,058)			0.88
0/1	86 (85.1 %)	804 (84 %)
2	15 (14.9 %)	153 (16 %)
Primary, n (%) (n = 1,077)			0.01
Appendiceal	57 (55.9%)	461 (47.3%)
Colon	22 (21.6%)	212 (21.7%)
Mesothelioma	12 (11.8%)	72 (7.4%)
Ovarian	1 (1%)	72 (7.4%)
Unknown	10 (9.8)	158 (16.2)
Pre-HIPEC chemotherapy (n = 980), (%)	47 (51.7)	483 (54.3)	0.66
Total # organs resected, mean (range)	3.7	2.8	<0.001
Resection status, n (%) (n = 1,069)			0.004
R0/1	33 (33 %)	465 (48 %)
R2+	67 (67 %)	504 (52 %)

Bold values denote statistical significance