Table 8 Testing the correlation between P300 variables and cognitive decline risk factors: TNF-α, COX-2, age, BMI and chronic diseases

P300 latency

r

1

p

n

20

Amplitude

r

− 0.381

1

p

0.108

n

19

19

RT

r

− 0.250

− 0.008

1

P

0.303

0.974

n

19

18

19

TNF

r

0.276

0.023

− 0.068

1

P

0.301

0.935

0.810

n

16

15

15

89

COX

r

− 0.339

− 0.483

0.208

− 0.080

1

P

0.199

0.068

0.458

0.457

n

16

15

15

89

89

Age

r

− 0.609^*

0.016

0.513

0.044

− 0.068

1

P

0.021

0.955

0.073

0.722

0.585

n

14

14

13

67

67

72

BMI

r

0.426

0.028

− 0.431

− 0.013

− 0.098

− 0.324^**

1

P

0.128

0.924

0.141

0.917

0.429

0.010

n

14

14

13

67

67

63

71

CD

r

− 0.503

0.576^*

0.309

0.075

− 0.173

0.076

0.003

1

P

0.056

0.031

0.282

0.528

0.140

0.540

0.983

n

15

14

14

74

74

67

65

79