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Can J Psychiatry. 2002 Aug;47(6):572-4.

Evidence that latitude is directly related to variation in suicide rates.

Author information

1
Augusta Mental Health Institute, Augusta, Maine, USA. george.davis@state.me.us

Abstract

OBJECTIVE:

To use available suicide-rate data from 20 countries to see patterns and relations more clearly.

METHOD:

We obtained raw suicide rates from the Organization for Economic Cooperation and Development (OECD) database from 1960 through 1997 and calculated averages and standard deviations.

RESULTS:

There is a positive linear relation between the variation in suicide rate and geographic latitude.

CONCLUSIONS:

The variation in light-dark cycles is superimposed upon human mood.

PMID:
12211887
DOI:
10.1177/070674370204700611
[Indexed for MEDLINE]

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