Reliability, validity and cut-off score of the Chinese version of the panic disorder severity scale self-report form in patients with panic disorder

Table 3 Statistical results of internal consistency

Items	Alpha if item-deleted	Corrected item-total correlation r1	Corrected item-total correlation r2
Panic attack frequency	0.76	0.45	0.22
Distress during panic attacks	0.80	0.34	0.13
Severity of anticipatory anxiety	0.75	0.52	0.37**
Agoraphobic fear/avoidance	0.75	0.53	0.34**
Panic related sensation fear/avoidance	0.75	0.52	0.29**
Work impairment	0.72	0.65	0.35**
Social impairment	0.73	0.63	0.33**

ISSN: 1471-244X