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Table 1 Patient, tumor, treatment and body composition characteristics at inclusion

From: No evidence for changes in skeletal muscle mass or weight during first-line chemotherapy for metastatic colorectal cancer

 

Male n = 38 (50%)

Female n = 38 (50%)

Total n = 76

P-value

Age (years)

60.7 ± 9.1

60.5 ± 11.0

60.6 ± 10.0

0.971

ECOG-PS

1.000

 0–1

35 (92%)

34 (90%)

69 (91%)

 

 2

3 (8%)

4 (10%)

7 (9%)

 

Tumor type

1.000

 colon

31 (82%)

31 (82%)

62 (82%)

 

 rectum

7 (18%)

7 (18%)

14 (18%)

 

Number of metastatic sites

0.479

 1

13 (34%)

16 (42%)

29 (38%)

 

 ≥ 2

25 (66%)

22 (58%)

47 (62%)

 

Treatment regimen

0.163

 XELIRI

19 (50%)

13 (34%)

32 (42%)

 

 FOLFIRI

19 (50%)

25 (66%)

44 (58%)

 

Weight (kg)

76.4 ± 12.3

57.7 ± 10.8

67.0 ± 14.8

< 0.001

Weight loss (WL) (%)

6.0 ± 6.0

6.0 ± 7.9

6.0 ± 7.0

0.564

WL category 5% cut-off

0.386

 ≤ 5%

19 (58%)

14 (44%)

33 (51%)

 

 > 5%

14 (42%)

18 (56%)

32 (49%)

 

 Missing

5 (−)

6 (−)

11 (−)

 

WL category 10% cut-off

0.941

 ≤ 10%

25 (76%)

23 (72%)

48 (74%)

 

 > 10%

8 (24%)

9 (28%)

17 (26%)

 

 Missing

5 (−)

6 (−)

11 (−)

 

BMI (kg/m2)

25.6 ± 3.8

22.3 ± 4.1

23.9 ± 4.2

< 0.001

BMI category (kg/m2)

0.001

 < 18.5

0 (0%)

7 (18%)

7 (9%)

 

 18.5–24.9

16 (42%)

22 (58%)

38 (50%)

 

 25–29.9

15 (40%)

8 (21%)

23 (30%)

 

 ≥ 30

7 (18%)

1 (3%)

8 (11%)

 

SMM index (cm2/m2)

52.9 ± 9.9

37.9 ± 5.4

45.4 ± 10.9

< 0.001

SMD (HU)

40.4 ± 8.9

40.0 ± 11.2

40.2 ± 10.0

0.881

VAT index (cm2/m2)

46.5 ± 28.0

23.8 ± 20.5

35.1 ± 26.9

< 0.001

SAT index (cm2/m2)

45.6 ± 17.5

54.2 ± 30.5

50.0 ± 25.2

0.285

SMM depletion

12 (32%)

28 (74%)

40 (53%)

< 0.001

  1. Continuous variables are summarized with mean ± standard deviation and the difference according to gender is tested using Wilcoxon–Mann–Whitney test. Categorical variables were summarized with the number of patients and the frequency, n (%), and the difference according to gender was tested using a Pearson’s chi-squared test or Fisher exact test when necessary
  2. ECOG PS Eastern Cooperative Oncology Group Performance Status, XELIRI bevacizumab + oral capecitabine + irinotecan, FOLFIRI bevacizumab + 5-fluorouracil/leucovorin (5FU/LV) + irinotecan
  3. Weight loss (WL) = (usual weight-weight at inclusion) / usual weight × 100; usual weight was available for 65 patients. BMI Body Mass Index (weight (kg) / height2 (m2)), SMM skeletal muscle mass, SMD skeletal muscle density, HU Hounsfield Units, VAT visceral adipose tissue, SAT subcutaneous adipose tissue
  4. SMM loss thresholds were those defined by Martin et al. [6]