Table 2 Fixed effects of linear mixed effects model.

From: The influence of the COMT Val158Met polymorphism on prefrontal TDCS effects on aggression

Predictor

β

SE

Lower-95%

Upper-95%

t

p

df

Intercept

53.59

2.40

48.90

58.29

22.37

 < 0.001

15,749

Time

− 1.78

0.18

− 2.14

− 1.42

− 9.76

 < 0.001

15,749

tDCS

− 2.79

2.39

− 7.54

1.95

− 1.17

0.245

85

COMT

2.33

2.39

− 2.41

7.08

0.98

0.331

85

Provocation

12.56

1.03

10.55

14.58

12.24

 < 0.001

15,749

Time x tDCS

0.08

0.18

− 0.28

0.43

0.42

0.674

15,749

Time x COMT

− 1.89

0.18

− 2.25

− 1.54

− 10.37

 < 0.001

15,749

tDCS x COMT

0.07

2.39

− 4.68

4.81

0.03

0.977

85

Time x tDCS x COMT

1.42

0.18

1.07

1.78

7.80

 < 0.001

15,749

  1. β = regression coefficient; SE = standard error, Lower-95% = lower limit of 95% confidence interval, Upper-95% = upper limit of 95% confidence interval, df = degrees of freedom; tDCS = transcranial direct current stimulation; COMT = catechol O-methyltransferase.
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