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Table 2 Univariate Analysis of Dose-volume Variables Associated with Pericardial Effusion

From: Pericardial effusion after definitive concurrent chemotherapy and intensity modulated radiotherapy for esophageal cancer

Parameters

Pericardial effusion of any grade

Pericardial effusion ≥ Grade 3

Cutoff

P value

HR (95% CI)

Cutoff

P value

HR (95% CI)

Heart

 Maximal (Gy)

67.24

0.239

1.485 (0.769–2.870)

55.24

0.222

3.695 (0.453–30.128)

 Mean (Gy)

23.45

0.001

5.876 (2.068–16.697)

30.99

0.133

81.645 (0.260–25,636.991)

 V5 (%)

76.55

0.002

4.585 (1.776–11.835)

92.00

0.126

93.028 (0.281–30,852.401)

 V10 (%)

68.15

0.001

4.739 (1.837–12.224)

84.20

0.134

81.108 (0.258–25,461.652)

 V20 (%)

50.70

0.001

6.942 (2.118–22.753)

73.90

0.137

77.714 (0.251–24,062.690)

 V30 (%)

33.55

0.001

7.235 (2.204–23.749)

57.45

0.130

85.917 (0.268–27,518.745)

 V40 (%)

27.90

0.001

4.283 (1.864–9.841)

31.90

0.137

77.772 (0.251–24,088.957)

 V50 (%)

10.55

0.002

3.797 (1.653–8.723)

10.95

0.161

60.587 (0.195–18,812.141)

 V60 (%)

9.30

0.054

1.909 (0.988–3.690)

26.00

0.021

7.133 (1.343–37.891)

Pericardium

 Maximal (Gy)

55.14

0.198

1.673 (0.764–3.663)

53.97

0.406

27.314 (0.011–66,655.501)

 Mean (Gy)

20.33

0.001

5.623 (1.981–15.958)

30.18

0.131

85.491 (0.267–27,370.316)

 V5 (%)

84.50

0.001

3.758 (1.709–8.262)

89.15

0.128

89.096 (0.275–28,826.399)

 V10 (%)

48.50

0.003

6.135 (1.876–20.066)

82.65

0.116

119.578 (0.305–46,932.571)

 V20 (%)

42.55

0.001

6.997 (2.141–22.863)

71.55

0.120

109.854 (0.295–40,886.708)

 V30 (%)

33.35

0.001

5.569 (1.961–15.817)

65.80

0.008

17.537 (2.137–143.927)

 V40 (%)

28.90

< 0.001

4.120 (1.868–9.086)

55.35

< 0.001

19.316 (3.711–100.530)

 V50 (%)

21.45

< 0.001

4.262 (2.086–8.708)

16.10

0.151

66.216 (0.215–20,359.365)

 V60 (%)

11.10

0.066

1.838 (0.961–3.514)

24.70

0.011

9.324 (1.676–51.885)

  1. Abbreviations: Gy gray, Vx percentage of the heart or pericardium volume receiving more than x gray