Study on sex differences and potential clinical value of three-dimensional computerized tomography pelvimetry in rectal cancer patients

Table 4 Clinical and pathological characteristics data of 218 patients in the laparoscopic radical resection for rectal cancer

	Range	mean ± SD or median (Q1, Q3)	No. of cases (percentage), n (%)
Age (yr)	32-89	66 (59, 74)
Sex
Male			139 (63.76)
Female			79 (36.24)
BMI (kg/m2)	14.42-31.25	22.57 ± 3.17
ASA grading
I			22 (10.09)
II			185 (84.86)
III			11 (5.05)
History of previous abdominal surgery			19 (8.72)
Neoadjuvant therapy			8 (3.67)
pTNM/ypTNM staging
0			9 (4.13)
I			53 (24.31)
II			63 (28.9)
III			93 (42.66)

If the data follows a normal distribution, it is represented as mean ± SD. If the data does not follow a normal distribution, it is represented as median (Q1, Q3). Examples (%) will be used to represent count and ordinal data. ASA: American Society of Anesthesiologists; TNM: Tumor-node-metastasis; BMI: Body mass index.