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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