TABLE 5.

Dimensional stability of personality disorders from baseline to follow-up (N = 115).

	Mean-level stability					Rank-order stability
	Baseline	Follow-up
Personality disorder traits	M (SD)	M (SD)	Mean difference	Cohen’s d	p-value	Spearman’s ρ
Total score	99.27 (19.63)	104.1 (18.52)	4.89	0.23	0.016*	0.24**
Cluster A	29.1 (6.94)	31.23 (6.96)	2.13	0.26	0.006**	0.18
Paranoid	9.08 (2.83)	9.90 (2.90)	0.82	0.22	0.017*	0.13
Schizotypal	10.20 (1.93)	10.65 (2.16)	0.44	0.14	0.123	0.11
Schizoid	8.19 (1.92)	9.36 (2.95)	1.17	0.36	<0.001***	0.22*
Cluster B	42.70 (10.11)	43.44 (8.93)	0.74	0.07	0.462	0.28**
Histrionic	9.79 (2.56)	9.20 (1.51)	-0.69	0.24	0.010*	0.28**
Narcissistic	10.82 (2.78)	10.66 (2.41)	-0.15	0.04	0.649	0.23*
Borderline	13.36 (5.05)	12.83 (3.92)	-0.53	0.11	0.236	0.36***
Antisocial	8.73 (2.56)	10.81 (3.70)	2.06	0.57	<0.001***	0.31***
Cluster C	27.47 (5.80)	29.73 (6.34)	2.26	0.30	0.001**	0.20*
Avoidant	9.13 (2.89)	9.18 (2.69)	0.05	0.01	0.864	0.31***
Dependent	9.82 (2.64)	10.14 (2.72)	0.33	0.10	0.289	0.27**
Obsessive compulsive	10.17 (3.05)	11.91 (3.31)	1.75	0.42	<0.001***	−0.08
Passive aggressive	9.17 (3.01)	9.43 (2.64)	0.25	0.06	0.470	0.08
Depressive	9.35 (3.14)	10.41 (3.73)	1.06	0.26	0.005**	0.25**

*p < 0.05, **p < 0.01, ***p < 0.001. The sample size is sufficient to achieve a power of ≥0.8 if d ≥ 0.24 and ρ ≥ 0.23.