Insomnia in hospitalized psychiatric patients: prevalence and associated factors

Figures & data

Table 1 Patient characteristics stratified by presence or absence of insomnia

Patient characteristics	Patients with insomnia (%) N=137	Patients with no insomnia (%) N=66	p-value
Sex
Male	57 (41.30%)	34 (47.96%)	0.24
Female	79 (57.66%)	32 (52.03%)
Age (years)
<55	131 (95.62%)	57 (86.34%)	0.32
>55	6 (2.5%)	9 (10.56%)
Sleeping hoursa
<7 hours	76 (55.47%)	21 (31.81%)	<0.001
>7 hours	61 (44.52%)	45 (68.18%)
Diagnosis
Depression	67 (48.9%)	23 (34.84%)	0.30
Schizophrenia/schizoaffective disorder	13 (9.48%)	13 (19.69%)
Bipolar	22 (16.05%)	8 (12.12%)
Anxiety disorder	15 (10.94%)	8 (12.12%)
Substance abuse	20 (14.59%)	12 (18.18%)
Eating disorder	0 (0.00%)	1 (1.51%)
Depressive symptomsa
None	17 (12.40%)	19 (28.78%)	<0.001
Mild to moderate	25 (18.24%)	22 (33.33%)
Severe	95 (69.34%)	25 (37.87%)
Suicidal ideationa
Yes	80 (58.39%)	30 (45.45%)	0.03
No	57 (41.60%)	36 (54.54%)
Anxiety symptomsa
None	21 (15.32%)	15 (22.72%)	<0.001
Mild to moderate	56 (40.87%)	34 (51.51%)
Severe	60 (43.79%)	17 (25.75%)
Substance abuse
Cannabis	20 (16.25%)	9 (13.63%)	0.26
Cocaine	8 (5.83%)	1 (1.51%)
Nonprescribed opiates	3 (2.18%)	2 (3.03%)
Nonprescribed benzodiazepines	7 (5.10%)	0 (0.00%)
Alcohol	51 (37.22%)	20 (30.30%)	0.79

Note:

a Denotes statistical significance.

Table 2 Patients with insomnia and RLS per the RLSRS

Insomnia severity	Patients with no or mild RLS (%) N=173	Patients with moderate-to-severe RLS (%) N=30	p-value
None	62 (35.8%)	4 (13.3%)	0.04
Mild	51 (29.5%)	6 (20.0%)
Moderate	39 (22.5%)	16 (53.3%)
Severe	21 (12.1%)	4 (13.3%)

Abbreviations: RLS, restless leg syndrome; RLSRS, restless legs syndrome rating scale.