Table 7.

Internal Consistency Cnalyses for the Screening Part of the KANNER Scale

	Scale Variance if Item Deleted	Corrected Item-Total Correlation	Cronbach’s Alpha if Item Deleted
Waxy flexibility/catalepsy	0.5830	0.701	0.887
Immobility	0.5785	0.734	0.885
Refusal to eat or drink	0.5740	0.690	0.887
Excitement	0.5785	0.447	0.901
Staring	0.5561	0.800	0.880
Negativism	0.5516	0.776	0.881
Mutism	0.5516	0.730	0.885
Impulsivity	0.6009	0.496	0.898
Rigidity	0.5964	0.476	0.899
Echolalia/echopraxia	0.5919	0.554	0.895
Direct observation of catatonic features in nursing notes	0.6054	0.538	0.896