Table 2 Changes in size of fat depots.

From: Change in abdominal obesity after colon cancer surgery – effects of left-sided and right-sided colonic resection

 

Size of fat depots

In-group differences

Between-group differences

PreOP mean, cm2

3 years mean, cm2

PreOP vs. 3 years

PreOP

Change (PreOP-3 years)

±SEM

±SEM

Δ (95% CI)

p-value

Diff. (95% CI)

p-value

Diff. (95% CI)

p-value

All patients

VAT, cm2

 Left-sided

158 ± 12.76

172 ± 12.92

1.05 (1.02–1.09)

<0.01

1.02 (0.97–1.09)

0.42

1.03 (0.98–1.09)

0.24

 Right-sided

145 ± 14.78

147 ± 14.99

1.02 (0.98–1.06)

0.38

    

SAT, cm2

 Left-sided

199 ± 10.75

215 ± 10.98

1.04 (1.02–1.06)

<0.001

1.06 (1.06–1.07)

0.87

0.98 (0.95–1.01)

0.24

 Right-sided

182 ± 11.10

208 ± 12.38

1.06 (1.04–1.09)

<0.001

    

TAT, cm2

 Left-sided

353 ± 19.26

386 ± 18.80

1.05 (1.02–1.07)

<0.01

1.02 (0.98–1.06)

0.77

1.00 (0.97–1.04)

0.92

 Right-sided

325 ± 20.95

354 ± 21.68

1.04 (1.01–1.07)

<0.01

    

V/S ratio

 Left-sided

0.85 ± 0.07

0.88 ± 0.07

1.01 (0.98–1.03)

0.59

1.05 (0.93–1.18)

0.41

1.05 (1.00–1.09)

0.03

 Right-sided

0.80 ± 0.09

0.75 ± 0.09

0.96 (0.93–0.99)

0.02

    

Men

VAT, cm2

 Left-sided

206 ± 19.21

224 ± 18.89

1.06 (1.02–1.10)

<0.01

1.02 (0.94–1.11)

0.59

1.05 (0.98–1.13)

0.14

 Right-sided

214 ± 25.95

212 ± 27.58

1.01 (0.95–1.06)

0.84

    

SAT, cm2

 Left-sided

163 ± 11.62

176 ± 10.78

1.04 (1.01–1.07)

<0.01

0.99 (0.94–1.05)

0.85

0.99 (0.94–1.03)

0.52

 Right-sided

152 ± 13.71

172 ± 16.47

1.06 (1.02–1.09)

<0.01

    

TAT, cm2

 Left-sided

367 ± 29.18

398 ± 27.07

1.04 (1.01–1.08)

0.01

1.01 (0.94–1.08)

0.82

1.02 (0.96–1.07

0.66

 Right-sided

366 ± 36.59

384 ± 38.80

1.03 (0.99–1.08)

0.14

    

V/S ratio

 Left-sided

1.27 ± 0.09

1.27 ± 0.09

1.01 (0.98–1.04)

0.54

1.00 (0.89–1.13)

0.94

1.05 (1.01–1.10)

0.03

 Right-sided

1.30 ± 0.15

1.21 ± 0.16

0.96 (0.93–0.99)

0.02

    

Women

VAT, cm2

 Left-sided

110 ± 13.17

119 ± 13.3

1.04 (0.99–1.10)

0.12

1.01 (0.93–1.10)

0.81

1.02 (0.94–1.10)

0.69

 Right-sided

98 ± 11.86

101 ± 11.50

1.03 (0.97–1.09)

0.37

    

SAT, cm2

 Left-sided

234 ± 16.34

257 ± 17.12

1.05 (1.01–1.08)

<0.01

1.00 (0.96–1.05)

0.83

0.98 (0.93–1.03)

0.38

 Right-sided

205 ± 15.38

236 ± 16.28

1.07 (1.03–1.11)

<0.001

    

TAT, cm2

 Left-sided

339 ± 25.39

373 ± 26.27

1.05 (1.01–1.08)

<0.01

1.01 (0.96–1.06)

0.78

0.99 (0.94–1.05)

0.79

 Right-sided

292 ± 23.48

332 ± 24.55

1.05 (1.01–1.10)

0.01

    

V/S ratio

 Left-sided

0.45 ± 0.05

0.46 ± 0.05

1.01 (0.96–1.05)

0.79

1.00 (0.89–1.13)

0.99

1.04 (0.97–1.12)

0.27

 Right-sided

0.41 ± 0.04

0.40 ± 0.04

0.97 (0.92–1.02)

0.23

    
  1. Means (SEM) are based on available data (PreOp, 3 years) for patients who underwent left-sided or right-sided colonic cancer resection.
  2. In-group and between-group differences were analyzed using a unified linear mixed effects model. Logarithmic values were used. In group and between group changes don’t reflect the numerical difference between preoperative and 3 years, given that mean change is estimated based on mixed-model analysis.
  3. VAT Visceral adipose tissue, SAT Subcutaneous adipose tissue, TAT Total adipose tissue, V/S VAT/SAT ratio, PreOP Preoperative.
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