Table 1.

Baseline characteristics of the study population

Variables	Whole population n = 1743
Age [years (mean ± SD)]	43 ± 3
Male gender [n (%)]	814 (46)
SAPS II score, points (mean ± SD)	34 ± 17
Mental disorder [n (%)]
Schizophrenia	97 (6)
Non-schizophrenia psychiatric disorder	237 (13)
Depression disorder	1058 (60)
Bipolar disorder	172 (10)
Anxiety disorder	187 (11)
Substance dependence (alcohol and/or drug addiction)	492 (28)
Transfer from psychiatric hospital or ward [n (%)]	130 (7)
Psychoactive medication before admission [n (%)]
None	197 (11)
Benzodiazepines	1043 (60)
Neuroleptics	497 (28)
Antipsychotics other than neuroleptics	175 (10)
Lithium	81 (5)
SSRIs	420 (24)
SNRIs	34 (2)
Tri- or tetracyclics antidepressants	226 (13)
MAOIs	148 (8)
Admission following deliberate self-harm [n (%)]	1280 (73)
Deliberate self-poisoning with psychoactive medications
Alone	1082 (62)
And/or with non-psychoactive medications	139 (8)
And/or with pesticides, household, or industrial products	28 (1.5)
And/or with hanging, drowning, jumping from buildings, or corrosive chemicals ingestion	31 (1.5)
Admission for another reason than deliberate self-harm	463 (27)
Respiratory failure	165 (9)
Shock	65 (4)
CNS or peripheral disorder	82 (5)
Metabolic disorder	53 (3)
Out-of-hospital cardiac arrest	18 (1)
Acute kidney injury	13 (0.5)
Non-deliberate psychoactive medication overdose	44 (2.5)
Miscellaneous	33 (2)
Chemical pneumonitis and/or aspiration pneumonia [n (%)]	479 (27)
Organ support in the ICU [n (%)]
Invasive mechanical ventilation	1206 (69)
Vasopressors	378 (22)
Renal replacement therapy	176 (10)
ICU outcomes [n (%)]
Acquired infection at any site	64 (4)
Mortality	91 (5)

SAPS Simplified Acute Physiology Score, CNS central nervous system, SSRIs selective serotonin reuptake inhibitors, SNRIs selective norepinephrine reuptake inhibitors, MAOIs monoamine oxidase inhibitors