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Table 6 Cronbach’s alpha

From: German version, inter- and intrarater reliability and internal consistency of the “Agitated Behavior Scale” (ABS-G) in patients with moderate to severe traumatic brain injury

   Correcteda item scale correlation Cronbach’s alpha if item deleted
Item 1 Distractibility .534 .590
Item 2 Impulsivity .456 .610
Item 3 Resistance to care .410 .632
Item 4 Violence .486 .615
Item 5 Anger .231 .655
Item 6 Self-stimulation .242 .652
Item 7 Tube pulling .300 .643
Item 8 Wandering .060 .664
Item 9 Restlessness .477 .608
Item 10 Repetitiveness .278 .647
Item 11 Rapid talking .064 .689
Item 12 Sudden mood change .197 .656
Item 13 Crying/laughing .159 .659
Item 14 Self-abusive .116 .663
  1. Legend: aCorrelation between each item and the scale score excluding that item