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Table 1 Sample characteristics of patients included by treatment group

From: Effects on impulsivity and delay discounting of intermittent theta burst stimulation add-on to dialectical behavioral therapy in borderline personality disorder: a randomized, sham-controlled pilot trial

 

SHAM (n = 19)

ACTIVE (n = 17)

Total (N = 36)

p1

Age, mean (SD), y

25.9 (6.8)

24.8 (5.9)

25.4 (6.3)

0.58

Gender: female, n (%)

17 (89.5)

15 (88.2)

32 (88.9)

0.60

Handedness: right, n (%)

15 (78.9)

14 (82.4)

29 (80.6)

0.96

Smoking ‘yes’, n (%)

11 (57.9)

9 (52.9)

20 (55.6)

0.80

Years of education (school, university, or occupational training), mean (SD)

14.3 (2.2)

13.6 (2.4)

14 (2.3)

0.38

Employed, n (%)

11 (57.9)

7 (41.2)

18 (50.0)

0.51

Years after first BPD diagnosis, mean (SD)

1.5 (3.1)

2.0 (4.9)

1.7 (4.0)

0.72

BSL sum score, mean (SD)

44.6 (16.6)

39.9 (15.8)

42.4 (16.2)

0.39

BDI, mean (SD)

32.8 (10.2)

32.5 (12.4)

32.6 (11.2)

0.93

MADRS total score, mean (SD)

20.7 (5.1)

21.3 (5.6)

21 (5.3)

0.76

MADRS item 10 (suicidal thoughts), mean (SD)

1.3 (0.8)

1.3 (0.8)

1.3 (0.8)

0.94

SCS, mean (SD)

2.0 (0.7)

2.1 (0.5)

2.0 (0.6)

0.85

BIS-15, mean (SD)

39.1 (5.8)

40.0 (8.0)

39.5 (6.9)

0.69

- Non-planning impulsivity

12.9 (3.0)

13.0 (2.8)

13.0 (2.9)

0.93

- Motor impulsivity

13.5 (2.4)

13.7 (3.5)

13.6 (2.9)

0.81

- Attentional impulsivity

12.1 (2.8)

12.5 (2.6)

12.3 (2.7)

0.70

GAF, mean (SD)

54.5 (14.1)

52.3 (13.3)

53.5 (13.6)

0.63

MCQ, mean (SD)

0.03469 (0.0767)

0.01072 (0.01588)

0.02338 (0.05734)

0.20

MCQlog2, mean (SD)

-2.34222 (0.97617)

-2.63338 (0.8883)

-2.47971 (0.93409)

0.36

MCQ Consistency, mean (SD)

0.90253 (0.09737)

0.9281 (0.06207)

0.91461 (0.08249)

0.36

MCQ proportion ‘Late Delayed Reward’, mean (SD)

0.51267 (0.22504)

0.62309 (0.23286)

0.56481 (0.23229)

0.16

Psychotropic drugs, n (%)

    

None

7 (36.8)

4 (23.5)

11 (30.6)

0.48

Any antidepressant

12 (63.2)

10 (58.8)

22 (61.1)

0.79

- SSRI

7 (36.8)

1 (5.9)

8 (22.2)

0.044

- SNRI

2 (10.5)

6 (35.3)

8 (22.2)

0.114

Any antipsychotic (AP)

2 (10.5)

5 (29.4)

7 (19.4)

0.22

- Second generation AP

0 (0)

4 (23.5)

4 (11.1)

0.040

Sum ACTIVE / SHAM sessions, mean (SD)

18.2 (1.5)

18.5 (1.3)

18.3 (1.4)

0.50

Resting motor threshold, mean (SD)

51.1 (12.9)

49.8 (11.0)

50.5 (11.9)

0.75

iTBS stimulus intensity, mean (SD)

40.8 (10.4)

39.6 (8.8)

40.2 (9.6)

0.72

Self-assessed treatment, n (%)

   

0.35

- unknown / unsure

4 (21.1)

2 (11.8)

6 (16.7)

 

- SHAM

8 (42.1)

4 (23.5)

12 (33.3)

 

- ACTIVE

7 (36.8)

11 (64.7)

18 (50.0)

 
  1. Active, intermittent theta burst stimulation; BDI, Beck’s Depression Inventory (second edition, BDI-II); BPD, Borderline Personality Disorder; BIS, Barratt Impulsiveness Scale (short form, BIS-15); BSL-23, 23-item Borderline Symptom List; GAF, Global Assessment of Functioning scale; MCQ, Monetary Choice Questionnaire; MADRS, Montgomery-Åsberg Depression Rating Scale; SCS, Self-Compassion Scale (German short version, SCS-D); Sham, sham stimulation; SSNRI, selective serotonin noradrenalin reuptake inhibitor; SSRI, selective serotonin reuptake inhibitor
  2. 1 Significance level for group differences; t test was used for continuous measures, Chi2 was used for frequencies / proportions, and exact testing was used in case of low cell frequencies
  3. 2 log = logarithmic transformation