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Phase angle as a prognostic indicator of surgical outcomes in patients with gastrointestinal cancer

Jana Gulin

Jana Gulin

Medical Centre LjubljanaLjubljana, Slovenia
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Gulin, Jana
, 
Ester Ipavic

Ester Ipavic

Medical Centre LjubljanaLjubljana, Slovenia
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Ipavic, Ester
, 
Denis Mlakar Mastnak

Denis Mlakar Mastnak

Institute of Oncology LjubljanaLjubljana, Slovenia
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Mastnak, Denis Mlakar
, 
Erik Brecelj

Erik Brecelj

Institute of Oncology LjubljanaLjubljana, Slovenia
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Brecelj, Erik
, 
Ibrahim Edhemovic

Ibrahim Edhemovic

Institute of Oncology LjubljanaLjubljana, Slovenia
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Edhemovic, Ibrahim
 and 
Nada Rotovnik Kozjek

Nada Rotovnik Kozjek

  • Institute of Oncology LjubljanaLjubljana, Slovenia
  • University of Ljubljana, Faculty of MedicineLjubljana, Slovenia
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Kozjek, Nada Rotovnik
  
Nov 30, 2023
Phase angle as a prognostic indicator of surgical outcomes in patients with gastrointestinal cancer's Cover Image
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Article Category: Research Article
Published Online: Nov 30, 2023
Page range: 524 - 529
Received: Aug 03, 2023
Accepted: Sep 30, 2023
DOI: https://doi.org/10.2478/raon-2023-0060
Keywords
© 2023 Jana Gulin et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

FIGURE 1.

The ROC curve for the phase angle.
The ROC curve for the phase angle.

Characteristics of patients

Characteristics All patients Patients with no complications (G0) Patients with complications (G1–G5) p-value
Gender
  Male 50 (71 %)
  Female 20 (29 %)
Age (years)a 65.0 (10.7) [62.4–67.6] 61.7 (9.8) [56.9–66.6] 66.1 (10.9) [63.1–69.2] 0.137
Phase Angle (°)a 5.23 (2.77) [5.0–5.5] 5.64 (0.72) [5.3–6.0] 5.09 (0.98) [4.8–5.4] 0.036*
Location of the primary tumor (%)
  Colon 17 (24,3) 4 (22.2) 13 (25.0)
  Rectosigmoid 2 (2,9) 1 (5.5) 1 (1.9)
  Rectum 45 (64,3) 11 (61.1) 34 (65.4)
  Anus 1 (1,4) 1 (5.5) 0 (0)
  Breast 1 (1,4) 0 (0) 1 (1.9)
  Ovary 4 (5,7) 1 (5.5) 3 (5.8)

Odds for developing a complication and probabilities of developing a complication at different values of phase angle

Phase Angle (°) Odds of a complication Probability of a complication (%)
4.5 5.532 84.7
5.0 3.831 79.3
5.5 2.651 72.6
6.0 1.837 64.8

Mean age and mean phase angle in each Clavien Dindo grade

Number of patients (%) Age (years) a Phase angle (°)a
Grade 0 18 (26) 61.7 [56.9–66.6] 5.64 [5.28–6.00]
Grade I 5 (7) 56.0 [50.2–61.8] 6.22 [5.64–6.80]
Grade II 38 (54) 67.1 [63.4–70.7] 4.99 [4.67–5.31]
Grade III 4 (6) 62.2 [45.0–79.5] 5.15 [3.41–6.88]
Grade IV 5 (7) 72.2 [60.5–83.9] 4.64 [3.77–5.51]
Grade V 0 (0)

Contingency Table with the sensitivity and a specificity of the phase angle

Phase angle < 5,5 Phase angle ≥ 5,5
Complication 33 (true positive) 19 (false negative) 52
No complication 7 (false positive) 11 (true negative) 18
40 30
Language:
English
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Journal Subjects:
Medicine, Clinical Medicine, Internal Medicine, Haematology, Oncology, Radiology
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