Impact of sleep disturbance on patients in treatment for mental disorders

BMC Psychiatry

Table 3 Summary of six linear hierarchical regression analyses and one logistic hierarchical regression analysis assessing the unique associations between sleep disturbance and the dependent variables adjusted for age, gender, time in treatment, type of care, and diagnoses for patients from eight public mental health care centres

Dependent variables	Adj. R²	ΔR²	B	S.E. B	β	t
Patient rated variables
Quality of Life	0.12	0.08	−0.26	0.02	−0.29**	12.0
Symptom severity	0.20	0.17	0.29	0.02	0.42**	19.2
Benefit from treatment	0.02	0.01	−0.08	0.03	−0.08*	3.3
Clinician rated variables
Disorder severity	0.11	0.05	0.97	0.10	0.22**	9.3
Level of functioning	0.13	0.02	−1.82	0.27	−0.15**	6.7
Symptom severity	0.17	0.02	−1.59	0.23	−0.16**	6.9
			B	S.E. B	Wald	OR
Benefit from treatment⁺			0.33	0.05	40.7**	1.39

Notes. * p = 0.001, ** p < 0.0001. ⁺Clinician rated benefit from treatment was tested using logistic regression analysis. Only sleep disturbance entered in the fifth step is shown in the table, except Adj. R² which is the explained variance of all steps in the regression analyses. ΔR² is the explained variance of sleep disturbance entered in the fifth step of the regression analyses.
Quality of Life = Mean score on the Manchester Assessment of Quality of Life. Patient rated Symptom Severity = The mean score of the Symptom Checklist (omitting the sleep item). Disorder Severity = The Sum Score of the Health of Nations Outcome Scales. Level of Functioning = The Global Assessment of Functioning Scale (split version) Function Subscale. Clinician rated Symptom Severity = The Global Assessment of Functioning Scale (split version) Symptom Subscale.

ISSN: 1471-244X