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Table 2 Predictive power of tested variables at univariate and multivariate analysis

From: Spinal cord hypermetabolism extends to skeletal muscle in amyotrophic lateral sclerosis: a computational approach to [18F]-fluorodeoxyglucose PET/CT images

Variable

Outcome results

Univariate analysis

Cox regression model

Ā 

No. of patients

No. of deaths

Mortality rate (%)

Hazard ratio

95% confidence interval

p

Hazard ratio

95% confidence interval

p

Age

ā€ƒ< 63 years

28

7

25

1 (reference)

ā€“

0.1

Ā Ā Ā 

ā€ƒ> 63 years

28

14

50

2.37

0.771ā€“7.32

Ā Ā Ā 

Psoas volume

ā€ƒ< 3.4

28

13

46

1 (reference)

ā€“

0.17

Ā Ā Ā 

ā€ƒ> 3.4

28

8

29

2.17

0.717ā€“6.550

Ā Ā Ā 

Psoas N-SUV

ā€ƒ< 0.42

28

9

32

1 (reference)

ā€“

0.41

Ā Ā Ā 

ā€ƒ> 0.42

28

12

43

1.58

0.53ā€“4.71

Ā Ā Ā 

BA4 SUV

ā€ƒ< 5.48

28

14

50

3.38

1.09ā€“10.55

0.03

Ā Ā Ā 

ā€ƒ> 5.48

28

7

25

1 (reference)

ā€“

Ā Ā Ā 

ALSF score

ā€ƒ< 40

28

10

36

1 (reference)

ā€“

0.57

Ā Ā Ā 

ā€ƒ> 40

28

11

39

1.36

0.46ā€“4.06

Ā Ā Ā 

Psoas CV-SUV

ā€ƒ< 6.59%

28

6

21

1 (reference)

ā€“

0.016

Ā Ā Ā 

ā€ƒ> 6.59%

28

15

54

4.23

1.31ā€“13.62

Ā Ā Ā 

Spinal cord N-SUV

ā€ƒ< 0.92

28

4

14%

1 (reference)

ā€“

0.001

1 (reference)

ā€“

0.001

ā€ƒ> 0.92

28

17

61

9.27

2.5ā€“34.1

5.17

1.74ā€“15.38