Table 4.

Tetrachoric correlations among DSM-IC/IPDE personality disorders in the PD clinical reappraisal sample (n = 214)

	NCSR IPDE Clinical Data: Tetrachoric correlation estimates

	Cluster A				Cluster B			Cluster C

	PAR	S’OID	S’TYP	ANY A	ANT	BOR	ANY B	AVO	DEP	OCD	ANY C

Cluster A
Paranoid (PAR)
Schizoid (S’OID)	.77^*
Schizotypal (S’TYP)	.48	.96^*
Any cluster A PD (ANY A)	--	--	--
Cluster B
Antisocial (ANT)	.73^*	-.84^*	.13	.56^*	--
Borderline (BOR)	.76^*	.56^*	.34	.58^*	.64^*
Any cluster B PD (ANY B)	.83^*	.46	.27	.65^*	--	--	--
Cluster C
Avoidant (AVO)	.70^*	.55^*	.53^*	.60^*	.05	.54^*	.44
Dependent (DEP)	.20	-.84^*	-.86^*	.03	-.83^*	.82^*	.77^*	.70^*
Obsessive-compulsive (OCD)	.59^*	.40	.49	.49^*	.45	.67^*	.59^*	.63^*	.80^*
Any cluster C PD (ANY C)	.67^*	.49^*	.46^*	.55^*	.24	.55^*	.45	--	--	--
Total
PD NOS (PD NOS)	.55	-.89^*	-.10	.37	.90^*	.55	.82^*	-.27	-.79^*	.64^*	.43

Significant at the .05 level, two-sided test