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Table 2 Comparison of posing errors (mm) in overall and localized areas between the two groups

From: Effectiveness of personalized open-face mask combined with styrofoam fixation in radiotherapy treatment of head and neck cancers: a prospective randomized controlled trial

 

Open-face masks group

Control group

t

p

Overall

X

0.90 ± 0.84

0.92 ± 0.85

0.221

0.825

Y

1.26 ± 0.98

1.37 ± 1.09

1.368

0.172

Z

1.18 ± 0.84

1.15 ± 0.98

0.453

0.651

Rtn

0.65 ± 0.57

0.62 ± 0.55

0.692

0.489

local

X

1.13 ± 1.15

1.01 ± 0.89

1.433

0.152

Y

1.49 ± 1.19

1.80 ± 1.45

3.013

0.003

Z

1.31 ± 0.88

1.28 ± 1.17

0.446

0.656

Rtn

0.90 ± 0.81

0.84 ± 0.73

0.979

0.328