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Table 2 Dosimetry characteristics of patients

From: A dynamic nomogram predicting symptomatic pneumonia in patients with lung cancer receiving thoracic radiation

Characteristic

Symptomatic pneumonia(X ± S)

Asymptomatic pneumonia (X ± S)

Univariate analysis

Multivariate analysis

OR (95%CI)

P

OR (95%CI)

P

BED(Gy)

68.55 ± 11.87

71.89 ± 12.57

1.02(0.988–1.061)

0.198

  

GTV (cm³)

56.28 ± 59.29

54.30 ± 74.03

1.000(0.995–1.006)

0.892

  

GTVnd(cm³)

14.75 ± 18.42

12.69 ± 29.68

0.998(0.985–1.011)

0.726

  

PTV (cm³)

353.82 ± 196.46

292.40 ± 173.68

0.998(0.996-1.000)

0.101

1.000(0.996–1.004)

0.881

Left lung volume(cm³)

1423.66 ± 343.58

1429.56 ± 436.85

1.000(0.999–1.001)

0.946

  

Right lung volume(cm³)

1754.07 ± 468.70

1700.36 ± 491.30

1.000(0.999–1.001)

0.595

  

Total Lung Volume(cm³)

3177.23 ± 729.26

3114.24 ± 866.33

1.000(0.999-1.000)

0.719

  

V5 of total lungs(%)

64.98 ± 14.32

50.53 ± 18.42

0.945(0.916–0.975)

<0.001

1.083(1.012–1.159)

0.022

V10 of total lungs(%)

45.52 ± 12.04

38.34 ± 16.59

0.970(0.943–0.998)

0.035

0.855(0.747–0.978)

0.023

V20 of total lungs(%)

23.18 ± 8.67

18.00 ± 8.88

0.936(0.892–0.983)

0.008

  

V30 of total lungs(%)

13.10 ± 6.31

9.59 ± 5.05

0.889(0.820–0.963)

0.004

1.17(0.634–2.159)

0.251

V40 of total lungs(%)

7.65 ± 4.34

5.62 ± 3.32

0.861(0.767–0.966)

0.011

0.752(0.423–1.336)

0.331

V50 of total lungs(%)

3.75 ± 3.41

2.98 ± 2.94

0.928(0.822–1.048)

0.231

  

V60 of total lungs(%)

1.49 ± 1.15

1.02 ± 1.54

0.831(0.651–1.061)

0.137

  

MLD of total lungs

1383.15 ± 324.92

1002.98 ± 505.05

0.998(0.997–0.999)

0.001

1.005(1.000-1.010)

0.005

MLD of ipsilateral lung

1793.29 ± 652.52

1464.68 ± 652.52

0.999(0.998-1.000)

0.011

1.00(0.999–1.002)

0.733

Max of total lungs

6195.95 ± 1117.16

5805.172 ± 1686.10

1.000(0.999-1.000)

0.256

  

Min of total lungs(%)

53.13 ± 80.19

41.57 ± 107.76

0.999(0.996–1.002)

0.601

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