Table 2.

Descriptive statistics for self-report measures.

Self-report	Mean (SD)	Range	Cronbach's alpha
PDI paranoia	8.94 (9.03)	0–57	0.76
PDI grandiosity	8.85 (12.63)	0–64	0.84
Negative self-beliefs	1.91 (2.55)	0–15.5	0.90
Worry (PSWQ)	27.91 (11.00)	11–54	0.72
Worry (PTQ)	20.06 (12.24)	0–57	0.96
Sleep quality	8.61 (5.82)	0–31	0.68

PDI, Peters Delusions Inventory; PSWQ, Penn State Worry Questionnaire; PTQ, Perseverative Thinking Questionnaire.