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- V Grech.
- Department of Paediatrics, Mater Dei Hospital, Malta. E-mail: victor.e.grech@gov.mt.
- W Indian Med J. 2015 Oct 28; 65 (1): 177-179.
BackgroundThe male:female ratio at birth (M/F: male births divided by total births) is anticipated to approximate 0.515. The M/F in Micronesia in the Pacific Ocean has been noted to be higher than anticipated. This study analysed M/F in island populations available from a World Health Organization dataset.MethodsThe following islands were identified from the dataset as being sufficiently complete for analysis: Bahamas, Barbados, Puerto Rico, Trinidad and Tobago, and Mauritius.ResultsThere were 540 8629 live births available for analysis over the period 1960-2009 with an overall M/F of 0.5106 (95% CL 0.5101, 0.5110). There were no secular trends in M/F.ConclusionThe M/F in these equatorial islands is lower than anticipated, and the reason for this is unknown.
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