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Br J Psychiatry. 2006 May;188:465-71.

Lifetime and 12-month prevalence of mental disorders in the Nigerian Survey of Mental Health and Well-Being.

Author information

  • 1Department of Psychiatry, University of Ibadan, University College Hospital, PMB 5116, Ibadan, Nigeria. ogureje@comui.edu.ng

Abstract

BACKGROUND:

Large-scale community studies of the prevalence of mental disorders using standardised assessment tools are rare in sub-Saharan Africa.

AIMS:

To conduct such a study.

METHOD:

Multistage stratified clustered sampling of households in the Yoruba-speaking parts of Nigeria. Face-to-face interviews used the World Mental Health version of the Composite International Diagnostic Interview (WMH-CIDI).

RESULTS:

Of the 4984 people interviewed (response rate 79.9%), 12.1% had a lifetime rate of at least one DSM-IV disorder and 5.8% had 12-month disorders. Anxiety disorders were the most common (5.7% lifetime, 4.1% 12-month rates) but virtually no generalised anxiety or post-traumatic stress disorder were identified. Of the 23% who had seriously disabling disorders, only about 8% had received treatment in the preceding 12 months. Treatment was mostly provided by general medical practitioners; only a few were treated by alternative practitioners such as traditional healers.

CONCLUSIONS:

The observed low rates seem to reflect demographic and ascertainment factors. There was a large burden of unmet need for care among people with serious disorders.

PMID:
16648534
[PubMed - indexed for MEDLINE]
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