Table 1 Baseline sociodemographic and clinical characteristics of the trial samples of the three published randomized controlled trials of DBT-A for suicidal and self-harming adolescents with borderline features

Sociodemographic characteristics

Female sex

163

94.8

68

88.3

31

88.6

Age, mean (SD) years

14.9

1.5

15.6

1.5

15.0

1.4

Parents currently co-habiting

82

54.7

34

44.2

14

40.0

Race/ethnicity

 Caucasian/White

97

56.4

66

85.7

26

74.3

 Latina

48

27.5

3

3.9

5

14.3

 Black/African American

12

7.0

0

0

1

2.8

 Asian

10

5.9

5

6.5

2

5.7

 Other

5

2.9

3

3.9

1

2.8

Family annual income

 < 15 000 $ or € Equivalent

15

11.0

-

-

6

17.2

 15 000–29 999

9

6.6

-

-

4

11.4

 30 000–49 999

25

17.4

-

-

9

25.7

 ≥ 50 000

95

65.3

-

-

16

45.7

Clinical characteristics

Current psychiatric diagnosis

 Any depressive disorder

145

83.8

46

59.7

29

82.9

 Major depressive disorder

142

82.1

17

22.1

29

82.9

 Bipolar disorders

-

-

0

0

5

14.2

 Any anxiety disorder

93

54.1

33

42.9

19

54.3

 Posttraumatic stress disorder

78

45.1

13

16.9

8

22.9

 Any substance use disorder

-

-

2

2.6

15

42.9

 Eating disorder

1

0.7

6

7.8

18

51.4

 Borderline Personality disorder

92^c

53.2

15^c

20.5

-

-

 ADHD

-

-

4

5.2

11

31.4

Self-harm and related variables

 Suicidal ideation mean (SD)^a

47.6

17.4

36.9

23.7

45.2

17.1

 Any lifetime NSSI (l%)

163

94.2

77

100

35

100

 Lifetime number of NSSI (SD)

26.3

47.2

34.0

88.0

-

-

 Any Lifetime Suicide attempt (%)^b

173

100

26

38

26

74.3

 Number of SA (lifetime) mean (SD)

-

-

1.7

4.2

1.9

1.8

Level of functioning (C-GAS) mean (SD)

45.2

7.4

56.1

8.3

53.1

6.4