Table 1.

Distribution of socio-demographic and symptomatological variables between patients with major depressive disorder experiencing low-to-moderate and severe suicidal ideation.

	Low-moderate SI	Severe SI	P value
	(N = 159)	(N = 90)
Age	44.18 ± 12.98	41.03 ± 11.44	0.0568
Work/social impairment	27.52 ± 8.27	30.60 ± 8.37	0.0213
Depression symptoms
IDS-c30 (total score)	39.24 ± 9.27	42.90 ± 9.11	0.0029
Negative self-outlook	1.94 ± 0.87	2.17 ± 0.85	0.0516
Negative outlook of future	1.64 ± 0.87	1.86 ± 0.82	0.0583
Loss of pleasure	1.54 ± 0.88	1.77 ± 0.92	0.0568
Anxious mood	1.84 ± 0.78	1.98 ± 0.76	0.1888
Difficulty in falling asleep	1.94 ± 1.22	1.79 ± 1.34	0.3567
Middle nocturnal insomnia	2.04 ± 1.10	2.20 ± 1.06	0.2788
Hypomanic symptoms
More cheerful	0.28 ± 0.66	0.18 ± 0.53	0.2228
More self-confident	0.30 ± 0.71	0.21 ± 0.55	0.3295
Reduced need for sleep	0.53 ± 1.00	0.81 ± 1.34	0.0664
More active	0.18 ± 0.57	0.11 ± 0.55	0.3391
Bipolar spectrum variables
Age of onset (first episode)	24.86 ± 14.01	19.47 ± 13.36	0.0033
Recurrence (episodes/year)	0.32 ± 0.55	0.51 ± 1.25	0.1085
Mixed depression	26 (0.16)	10 (0.11)	0.2505
Subthreshold hypomania	14 (0.09)	14 (0.16)	0.1060
Bipolar score	1.01 ± 1.14	1.26 ± 1.13	0.1064

Significant differences (P < 0.025) are in bold.

Only variables with P < 0.40 at univariate analyses are reported.

Values are means ± SD or N (%).

IDS-C₃₀, 30-item Inventory of Depressive Symptomatology-Clinician Rating; SI, suicidal ideation.