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A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

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Time patterns of inpatient suicides.

Tanja Neuner¹, Bettina Hübner-Liebermann, Manfred Wolfersdorf

¹Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany.

International Journal of Psychiatry in Clinical Practice

|June 13, 2014

Summary

This study found no significant time patterns for psychiatric inpatient suicides by season, month, or day. However, a heightened suicide risk was observed within 50 days of admission.

Keywords:

Suicide month season time patterns weekday

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Area of Science:

Psychiatry
Public Health
Epidemiology

Background:

Previous research explored temporal patterns in general population suicides.
No studies have specifically investigated time-related patterns of suicides among psychiatric inpatients.

Purpose of the Study:

To analyze time patterns (season, month, weekday, month of birth) of suicides occurring during psychiatric inpatient stays.
To identify any temporal variations associated with inpatient suicides in a psychiatric university hospital.

Main Methods:

Retrospective analysis of all inpatient suicides from 1998-2007.
Data sourced from the German psychiatric basic documentation system (DGPPNBADO).
Descriptive and univariate statistical analyses were employed.

Main Results:

No significant differences in suicide occurrence were found based on season, month, or weekday.
No unequal distribution of suicides was observed concerning the month of birth.
A significant finding was that 78.4% of inpatient suicides occurred within 50 days of admission.

Conclusions:

The primary temporal risk factor identified for inpatient suicide is the period shortly after admission.
Cyclic or temporal variations (season, month, day, birth month) do not appear to be highly relevant to inpatient suicides.
Other risk factors beyond temporal variations likely play a more significant role in psychiatric inpatient suicides.