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Table 2 Comparison in positional errors between subgroups

From: Impact of breath-hold level on positional error aligned by stent/Lipiodol in Hepatobiliary radiotherapy with breath-hold respiratory control

Subgroup

n

Average positional shift ± SD (mm)

AP

CC

RL

Overall

28

− 0.48 ± 2.54

− 0.85 ± 3.72

+ 0.41 ± 2.35

Age

  ≤ 60 y/o

13

− 0.17 ± 2.71

−1.89 ± 2.95

+ 0.71 ± 2.45

  > 60 y/o

15

−0.74 ± 2.35

+ 0.06 ± 4.07

+ 0.14 ± 2.23

p value

 

0.58

0.17

0.54

BMI

  ≤ 22.9

14

−0.73 ± 2.73

− 0.19 ± 2.32

+ 0.66 ± 2.70

  > 22.9

14

−0.22 ± 2.30

− 1.50 ± 4.63

+ 0.27 ± 1.91

p value

 

0.61

0.38

0.59

Mean BHL

  ≤ 1.4 L

14

−1.34 ± 2.00

+ 0.90 ± 2.64

− 0.03 ± 2.30

  > 1.4 L

14

+ 0.39 ± 2.72

−2.59 ± 3.82

+ 0.84 ± 2.32

p value

 

0.08

0.01

0.35

ΔBHL

  ≤ 0.03 L

18

−0.15 ± 2.87

−0.81 ± 4.25

+ 0.66 ± 2.43

  > 0.03 L

10

− 1.06 ± 1.65

−0.90 ± 2.50

−0.06 ± 2.14

p value

 

0.31

0.95

0.45

Liver volume

  ≤ 1.3 L

13

−0.43 ± 1.59

−1.38 ± 3.80

+ 0.65 ± 1.92

  > 1.3 L

15

−0.51 ± 3.14

−0.39 ± 3.59

+ 0.20 ± 2.65

p value

 

0.93

0.50

0.62

GTV

  ≤ 60 cm3

14

−0.60 ± 2.06

− 1.49 ± 3.30

+ 1.09 ± 1.72

  > 60 cm3

14

−0.35 ± 2.94

−0.20 ± 4.00

−0.28 ± 2.68

p value

 

0.80

0.38

0.13