Table 1. Comparison of internal consistencies for the 9 symptom dimensions of the BSI.

	No of items	Study Patients (N = 41)	Study Caregivers (N = 41)	Derogatis & Melisaratos 1983 (N = 719)
Internal consistency (α)
Symptom dimension
Somatisation	7	0.83	0.85	0.68
Obsession-compulsion	6	0.90	0.94	0.85
Interpersonal sensitivity	4	0.82	0.79	0.85
Depression	6	0.89	0.93	0.84
Anxiety	6	0.90	0.91	0.79
Hostility	5	0.79	0.65	0.81
Phobic anxiety	5	0.91	0.82	0.91
Paranoid ideation	5	0.72	0.65	0.79
Psychoticism	5	0.72	0.86	0.78