Table 1.

Showing the means and standard deviations of the sample for each scale in the survey.

Scale	Sample mean (SD)	Cronbach's alpha for this sample	Scale min – max score	Scale caseness cut-off score
Černis Felt Sense of Anomaly scale	49.74 (32.86)	0.98	0–160	–
Hospital Anxiety and Depression Scale: Anxiety	11.17 (4.83)	0.87	0–21	8
Hospital Anxiety and Depression Scale: Depression	7.63 (4.69)	0.85	0–21	8
Penn State Worry Questionnaire	57.43 (15.71)	0.95	16–80	45
Insomnia Severity Index	11.90 (6.33)	0.88	0–28	10
Specific Psychotic Experiences Questionnaire: Paranoia	23.74 (18.08)	0.95	0–75	–
Specific Psychotic Experiences Questionnaire: Hallucinations	7.21 (8.64)	0.91	0–45	–
Specific Psychotic Experiences Questionnaire: Grandiosity	3.11 (3.66)	0.86	0–40	–
Specific Psychotic Experiences Questionnaire: Cognitive disorganization	7.09 (3.20)	0.84	0–11	–
Post-Traumatic Symptom Disorder Checklist	29.62 (20.09)	0.95	0–80	33
Distress Tolerance Scale	45.74 (14.58)	0.92	15–75	–

NB: Cronbach's alphas above 0.8 are considered to indicate ‘good’ internal consistency, and above 0.9 ‘excellent’.