Role of pelvimetry in predicting surgical outcomes and morbidity in rectal cancer surgery: A retrospective analysis

Table 4 Comparisons between patient groups with or without perioperative morbidity

	n	Exist	n	None	P value
Age (year)	27	71.70 ± 9.16	52	63.52 ± 12.22	0.003a
Gender
Male	27	23 (85.19)	52	31 (59.62)	0.020b
Female		4 (14.81)		21 (40.38)
BMI (kg/m2)	23	27.60 (19:44)	50	24.90 (19.50:37.70)	0.316d
Tumor localization
Upper rectum	27	12 (44.44)	52	18 (34.62)	0.588b
Middle rectum		4 (14.81)		12 (23.08)
Lower rectum		11 (40.74)		22 (42.31)
ASA score
I	27	0	51	1 (1.96)	0.583c
II		11 (40.74)		19 (37.25)
III		15 (55.56)		31 (60.78)
IV		1 (3.70)		0
Operation time (min)	27	240 (130:360)	51	240 (150:360)	0.782d
Blood loss (cc)	26	137.50 (50:200)	52	125 (50:200)	0.355d
Tumor size	25	3.50 (0.03:17)	52	3.75 (0:8.40)	0.836d
Pelvic inlet area-CT (mm2)	27	8449.29 ± 1043.45	50	8417.50 ± 1333.64	0.915a
Number of dissected lymph nodes	25	13 (3:32)	52	15 (1:42)	0.372d
PCI	17	9.62 ± 1.74	35	10.78 ± 2.03	0.049a

^aIndependent samples t-test.

^bχ² test.

^cFisher-Freeman-Halton test.

^dMann-Whitney U test.

Data are expressed as n (%), mean ± SD, and median (minimum:maximum). ASA: American Society of Anesthesiologists; CT: Computed tomography; BMI: Body mass index; PCI: Pelvic cavity index.