Table 1 Results of linear mixed-effects models fit with treatment, time, and baseline neuropsychological performance on THC content in urine.

From: Neurocognitive moderation of repetitive transcranial magnetic stimulation (rTMS) effects on cannabis use in schizophrenia: a preliminary analysis

Neuropsychological measure

Fixed effects

Estimate

SE

df

t

p

NarcoCheck (ng/mL)

      

HVLT-R composite

Intercept

343.89

50.13

18.13

6.86

<0.001***

Treatment

−14.72

50.13

18.13

−0.29

0.77

Time

54.03

21.03

16.70

2.57

0.020*

HVLT-R

−33.40

51.60

35.82

−0.65

0.52

Treatment x Time

31.40

21.03

16.70

1.49

0.15

Treatment x HVLT-R

−88.43

51.60

35.82

−1.71

0.095

Time x HVLT-R

−24.01

30.56

18.24

−0.79

0.44

Treatment x Time x HVLT-R

−28.54

30.56

18.24

−0.93

0.36

SDR composite

Intercept

348.11

48.98

18.80

7.11

<0.001***

Treatment

−28.83

48.98

18.80

0.59

0.56

Time

51.51

22.61

17.82

2.28

0.035*

SDR

12.81

55.77

30.18

0.23

0.82

Treatment x Time

38.52

22.61

17.82

1.70

0.11

Treatment x SDR

−18.63

55.77

30.18

−0.33

0.74

Time x SDR

41.02

39.40

18.21

1.04

0.31

Treatment x Time x SDR

63.47

39.40

18.21

1.61

0.12

CPT attentional index

Intercept

375.15

40.05

14.94

9.37

<0.001***

Treatment

2.39

40.05

14.94

0.06

0.95

Time

49.15

23.42

13.18

2.10

0.055

CPT

42.21

21.93

23.50

1.92

0.066

Treatment x Time

34.11

23.42

13.18

1.46

0.16

Treatment x CPT

−69.87

21.93

23.50

−3.19

<0.01**

Time x CPT

−5.98

15.12

16.02

−0.40

0.69

Treatment x Time x CPT

−5.21

15.12

16.02

−0.34

0.73

CPT hit rate

Intercept

604.68

363.62

32.85

1.66

0.11

Treatment

106.31

363.62

32.85

0.29

0.77

Time

64.71

193.93

18.04

0.33

0.74

CPT

−0.59

0.90

32.71

−0.65

0.52

Treatment x Time

94.30

193.93

18.04

0.49

0.63

Treatment x CPT

−0.25

0.91

32.71

−0.27

0.79

Time x CPT

−0.04

0.49

18.73

−0.09

0.93

Treatment x Time x CPT

−0.18

0.49

18.73

−0.37

0.72

DS forward

Intercept

892.16

126.93

31.05

7.03

< 0.001***

Treatment

45.56

126.93

31.05

0.36

0.72

Time

−10.40

61.20

14.70

−0.17

0.87

DS

−52.31

10.90

22.76

−4.80

<0.001***

Treatment x Time

196.69

61.20

14.70

3.21

0.005**

Treatment x DS

−5.04

10.90

22.76

−0.46

0.65

Time x DS

4.67

5.76

14.61

0.81

0.43

Treatment x Time x DS

−17.07

5.76

14.61

−2.96

0.01**

TOL total correct

Intercept

663.55

347.73

11.71

1.91

0.08

Treatment

−185.48

347.73

11.71

−0.53

0.60

Time

450.77

218.34

8.63

2.07

0.07

TOL

−5.0

3.62

10.96

−1.38

0.20

Treatment x Time

−601.89

218.34

8.63

−2.76

0.023*

Treatment x TOL

2.85

3.62

10.96

0.79

0.45

Time x TOL

−4.98

2.34

8.85

−2.13

0.062

Treatment x Time x TOL

6.49

2.34

8.85

2.77

0.022*

KDDT Geometrick K

Intercept

256.04

101.30

25.94

2.53

0.02*

Treatment

−297.53

101.30

25.94

−2.94

0.007**

Time

−13.33

72.86

13.85

−0.18

0.85

Geo K

−15.64

21.23

14.54

−0.74

0.47

Treatment x Time

−134.64

72.85

13.85

−1.85

0.08

Treatment x Geo K

−80.39

21.23

14.54

−3.79

0.001**

Time x Geo K

−9.54

18.29

13.83

−0.52

0.61

Treatment x Time x Geo K

−42.20

18.29

13.83

−2.31

0.037*

  1. Hopkins Verbal Learning Test (HVLT-R), the Spatial Delayed Response (SDR), Continuous Performance Test (CPT), Digit Span (DS), Tower of London (TOL), Kirby Delay-Discounting Task (KDDT).
  2. Bold values in the table represent significant interactions of interest (p < 0.05)
  3. *p < 0.05; **p < 0.01; ***p < 0.001