Table 2. Affective disorders among patients with BPD relative to patients with other personality disorders.

	Borderline	Paranoid	Schizoid	Dissocial	Histrionic	OCPDa	Avoidant	Dependent	Unspecified	Non-BPD PDb
	(n = 1043)	(n = 194)	(n = 106)	(n = 64)	(n = 45)	(n = 131)	(n = 918)	(n = 232)	(n = 946)	(n = 2636)
Affectivedisorder	%	%	%	%	%	%	%	%	%	%	OR†
Affectivedisorderc	22.0	26.8	32.1	12.5	22.2	32.8	32.4*	30.6	27.6	29.4*	.75
Depression	14.9	22.2	22.6	6.2	17.8	21.4	24.9*	26.7*	20.8*	22.6*	.66
Bipolardisorder	5.7	2.1	2.8	6.2	2.2	6.1	3.1	2.2	3.9	3.4*	1.66
Dystymicdisorder	.9	2.6	6.6*	.0	.0	3.1	4.2*	.9	2.3	3.0*	.29

^aObsessive-compulsive personality disorder.

^bNon-BPD personality disorder.

^cThe percentages in the variable affective disorder are larger than the total of the subcategories depression, bipolar disorder, and dysthymia, because the variable includes all types of affective disorders listed in ICD-10 (F30–F39) [25].

^*Differ significantly from BPD group (p<.0025).

^†Odds ratio for the affective illnesses in the BPD group compared to non-BPD PD.