Table 1

Demographic characteristics of patients with borderline personality disorder and healthy controls

	Group; mean (SD)

Characteristic	BPD	Control	t₆₁	p value^*
Age, yr	23.7 (4.6)	24.4 (4.1)	−0.69	0.49
Education, school yr	11.8 (1.6)	12.0 (1.4)	−1.18	0.66
IQ^†	112.4 (12.2)	112.7 (10.9)	−0.11	0.91
GAF score	69.3 (8.57)	100 (0.0)	−5.83	< 0.001
Intracranial volume, mL	1338.0 (121.1)	1378.2 (116.7)	−0.73	0.19
BPD criteria, IPDE score	6.9 (1.4)	0.0 (0.0)	8.84	< 0.001
BDI score	24.3 (12.9)	5.7 (8.7)	6.75	< 0.001
BIS score	62.2 (13.9)	60.8 (4.7)	0.71	0.48
BSL score	1.6 (0.9)	0.1 (0.2)	9.27	< 0.001
CTQ score	56.2 (17.5)	30.6 (7.5)	7.65	< 0.001
FAF score
Spontaneous aggression	3.9 (2.9)	1.4 (2.1)	4.12	< 0.001
Reactive aggression	3.9 (2.2)	1.4 (1.6)	5.21	< 0.001
Irritability	7.7 (3.4)	3.6 (2.7)	5.46	< 0.001
Self-aggression	7.7 (2.8)	1.9 (2.6)	8.71	< 0.001
Inhibition	5.5 (2.0)	5.5 (1.9)	0.16	0.87
Openness	6.8 (1.7)	4.3 (2.2)	5.04	< 0.001
Aggression sum	15.6 (7.2)	6.3 (5.497)	5.79	< 0.001
STAXI score
Anger temperament	11.8 (4.3)	7.9 (3.0)	4.29	< 0.001
Anger reaction	12.3 (4.2)	8.2 (2.8)	4.65	< 0.001
Anger, in	20.7 (6.5)	13.7 (4.6)	5.05	< 0.001
Anger, out	15.1 (5.3)	10.5 (3.0)	4.29	< 0.001
Anger, control	19.9 (5.3)	24.0 (3.8)	−3.56	< 0.001

BDI = Beck Depression Inventory;21 BIS = Barratt Impulsiveness Scale;22 BPD = borderline personality disorder; BSL = Borderline Symptom List;23 CTQ = Childhood Trauma Questionnaire;24 FAF = Questionnaire for the Assessment of Factors of Aggression;25 GAF = Global Assessment Functioning;26 IPDE = International Disorder Examination for DSM–IV;27 SD = standard deviation; STAXI = State–Trait Anger Inventory.28
↵* Uncorrected for multiple comparisons.
↵† Hamburg–Wechsler Intelligence Test.29