Table 3.

Mean, standard deviation and kurtosis for each item of the I-BDRS.

	Mean	Standard deviation	Skewness	Kurtosis
1 - Depression	1.77	0.76	−0.46	0.12
2 - Sleep disturbance	1.23	1.04	0.17	−1.23
3 - Appetite disturbance	0.97	1.03	0.51	−1.13
4 - Social impairment	1.62	0.99	0.03	−0.87
5 - Activity/Energy	1.50	0.82	−0.01	−0.49
6 - Motivation	1.46	0.91	0.20	−0.45
7 - Concentration	1.37	0.80	0.30	−0.28
8 - Anxiety	1.92	0.81	−0.60	0.14
9 - Anhedonia	1.60	0.90	−0.20	−0.68
10 - Flattened affect	1.30	0.83	−0.01	−0.65
11 - Worthlessness	1.33	0.92	0.24	−0.74
12 - Helplessness	1.19	0.87	0.29	−0.58
13 - Suicidal ideation	0.50	0.78	1.44	1.26
14 - Guilt	1.38	0.86	0.20	−0.55
15 - Psychotic symptoms	0.62	0.82	1.18	0.56
16 - Irritability	0.72	0.81	0.93	0.23
17 - Lability	1.10	0.85	0.14	−0.95
18 - Motor drive	0.45	0.72	1.55	1.70
19 - Speech	0.46	0.67	1.13	0.07
20 - Agitation	0.96	0.76	0.41	−0.22