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Table 2 Patients’ clinical and perioperative characteristics

From: Perioperative risk factors for survival outcomes in elective colorectal cancer surgery: a retrospective cohort study

Variables

N (%)

Sex

 

Male

131 (56.0)

Female

103 (44.0)

Age (years)

 

< 60

109 (46.6)

≥ 60

125 (53.4)

Weigh (kg)

 

< 55

113 (48.3)

≥ 55

121 (51.7)

Nationality

 

The Han

217 (92.7)

Minority nationality

17 (7.3)

Tumor location

 

Rectum

182 (77.8)

Colon

52 (22.2)

TNM stage

 

I

15 (6.4)

II

59 (25.2)

III

137 (58.5)

IV

23 (9.8)

Tumor classification

 

The elevated

88 (37.6)

The ulcerative

110 (47.0)

The infiltrative

36 (15.4)

Histological type

 

Adenocarcinoma (NOS)

196 (83.8)

Special types of cancer

38 (16.2)

Degree of differentiation

 

High

63 (26.9)

Medium

140 (59.8)

Low

31 (13.2)

Lymphovascular invasion

 

Yes

25 (10.7)

No

209 (89.3)

ASA

 

II

194 (82.9)

III

40 (17.1)

Inhalation anesthetics

 

Sevoflurane

104 (44.4)

Isoflurane

130 (55.6)

Anesthesia time (h)

 

< 4.5

110 (47.0)

≥ 4.5

124 (53.0)

Duration of surgery (h)

 

< 3.5

122 (52.1)

≥ 3.5

112 (47.9)

Postoperative analgesia

 

Yes

227 (97.0)

No

7 (3.0)

Postoperative hospitalization days

 

< 13

117 (50.0)

≥ 13

117 (50.0)

IPS score

 

< 1

78 (33.3)

≥ 1

156 (66.7)

KM grade

 

Low–grade inflammation

89 (38.0)

High–grade inflammation

145 (62.0)

  1. Data shown as n (%)
  2. TNM tumor-node-metastasis, Adenocarcinoma (NOS) adenocarcinoma, not otherwise specified, ASA American Society of Anesthesiologists, IPS score inflammation-based prognostic scores, KM grade Klintrup–Makinen (KM) inflammatory cell infiltration grade