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Table 4 Paired t-tests to evaluate responsiveness to neoadjuvant chemotherapy

From: A new relative tumor sizing method in epi-metaphyseal osteosarcoma

 

Total

Survival

Metastasis

5-year survival

Death

Free

Positive

Mean±SD

P

Mean±SD

P

Mean±SD

P

Mean±SD

P

Mean±SD

P

ATL (mm)

BC

116.46

0.850

112.51

0.679

126.52

0.972

112.01

0.352

126.47

0.781

 

±54.67

 

±54.07

 

±57.53

 

±55.03

 

±54.85

AC

115.63

 

111.17

 

127.01

 

109.21

 

130.08

 

±56.30

 

±60.15

 

±45.61

 

±60.38

 

±44.77

ATV (ml)

BC

174.62

0.048

174.27

0.060

175.58

0.485

174.53

0.075

174.83

0.260

 

±198.28

 

±220.29

 

±127.79

 

±225.03

 

±121.45

AC

119.40

 

103.58

 

163.33

 

104.85

 

154.30

 

±87.88

 

±78.88

 

±101.16

 

±80.31

 

±99.56

RTV (ml/m2)

BC

107.86

0.059

109.32

0.074

103.83

0.463

109.49

0.092

103.96

0.241

 

±119.18

 

±132.50

 

±76.87

 

±135.34

 

±72.47

AC

75.47

 

67.95

 

96.35

 

68.88

 

91.28

 

±51.20

 

±47.33

 

±58.53

 

±48.12

 

±57.47

ATA (mm)

BC

60.49

0.075

58.06

0.011

66.65

0.380

57.31

0.016

67.62

0.540

 

±17.11

 

±18.56

 

±11.18

 

±18.47

 

±11.18

AC

56.82

 

51.78

 

69.66

 

51.14

 

69.62

 

±14.88

 

±12.96

 

±11.63

 

±12.74

 

±11.09

TAR

BC

0.89

0.114

0.89

0.009

0.87

0.260

0.85

0.018

0.96

0.670

 

±0.29

 

±0.32

 

±0.17

 

±0.25

 

±0.35

AC

0.84

 

0.80

 

0.94

 

0.77

 

0.99

 

±0.26

 

±0.25

 

±0.25

 

±0.20

 

±0.30

  1. Abbreviations: SD standard deviation, BC before neoadjuvant chemotherapy, AC after neoadjuvant chemotherapy, ATL absolute tumor length, ATV absolute tumor volume, RTV relative tumor volume, ATA absolute tumor axial size, TAR tumor axial ratio.