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Table 2 Association between preoperative decrease in skeletal muscle mass and clinical pathological background

From: Usefulness of the skeletal muscle index in postoperative ileus of colorectal cancer patients: a retrospective cohort study

Back ground

Low SMI (n = 68)

Normal SMI (n = 145)

p-value

Sex

   

Female

45 (66.2%)

42 (29.0%)

 < 0.001

Age (years)*

   

Mean (SD)

73.1 (11.2)

68.4 (11.0)

0.004

BMI*

   

Mean (SD)

20.6 (3.3)

24.4 (3.8)

 < 0.001

PNI*

   

Mean (SD)

45.3 (6.3)

47.0 (6.5)

0.076

GPS

   

2 over

4 (5.9%)

13 (9.0%)

0.591

Alb (g/dL)*

   

Mean (SD)

3.79 (0.5)

3.88 (0.5)

0.268

Cardiac disease

   

Positive

9 (13.2%)

28 (19.3%)

0.334

Lung disease

   

Positive

12 (17.6%)

11 (7.6%)

0.034

Diabetes mellitus

   

Positive

7 (10.3%)

39 (26.9%)

0.007

Tumor location

   

Rectal tumor

21 (30.9%)

59 (40.7%)

0.176

Tumor size

   

3.0 cm

40 (61.5%)

83 (58.9%)

0.761

pT stage

   

T3 over

40 (58.8%)

80 (55.2%)

0.658

pN stage

   

Positive

23 (33.8%)

37 (25.5%)

0.253

P

   

Positive

4 (5.9%)

4 (2.8)

0.270

H

   

Positive

4 (5.9%)

8 (5.5%)

1.0

Surgical procedure

   

Laparoscopy

57 (83.8%)

130 (89.7%)

0.263

Stoma

   

Positive

8 (11.8%)

23 (15.9%)

0.534

Operative time (min)

   

 > 240

34 (50.0%)

76 (52.4%)

0.770

Bleeding (min)

   

101

12 (17.6%)

28 (19.3%)

0.852

CDC

   

Grade 3 over

5 (7.4%)

22 (15.2%)

0.126

Complications

   

SSI

11 (16.2%)

39 (26.9%)

0.118

Anastomotic leakage

3 (4.4%)

14 (9.7%)

0.279

Remote infection

5 (7.4%)

7 (4.8%)

0.527

POI

13 (19.1%)

8 (5.5%)

0.005

  1. Continuous parameters are presented as mean (SD)*, and categorical parameters are presented as n (%), SMI skeletal muscle index, BMI body mass index, PNI prognostic nutritional index, GPS glasgow prognostic score, Alb albumin, Lung disease was defined as a condition with % vital capacity < 60% or a % force expiratory volume in 1.0 s < 50%, TNM tumor node metastasis, P peritoneal dissemination, H hepatic metastasis, CDC Clavien–Dindo classification, SSI surgical site infection, POI post operative ileus, P < 0.05