Factor Structure of CIWA-Ar in Alcohol Withdrawal

Table 3

Factor analysis (maximum likehood) with varimax rotation showing factor structure of CIWA-Ar (N = 201) at 36 hours.

CIWA-Ar items	Factor loading			% positive	Item scores
	Delirious	Autonomic	Nonspecific		Mean	SD
Tactile disturbances	.999			65.7	2.26	2.20
Auditory disturbances	.873	.150	.163	75.1	3.35	2.54
Orientation and clouding of sensorium	.851		−.137	49.3	1.06	1.30
Agitation	.777	.120		80	3.30	2.06
Anxiety		.998		91	2.96	1.92
Paroxysmal sweats		.660	.277	75	1.05	.86
Tremor		.528	.211	94.5	4.63	1.78
Headache and fullness in head	.172	.245		12.9	.18	.49
Nausea and vomiting	−.156	.375	.516	58.7	.93	.95
Visual disturbances	.233		.275	53.2	.72	.90
Eigenvalue	3.4	2.4	1
Variance (%)	34.34	24.25	10.04		Total = 68.74
Factor mean (SD)	9.97 (7.4)	8.81 (3.96)	1.64 (1.41)
Cronbach’s alpha	.91	.66	.26