Male-to-female birth ratios opposite in Europe and North America.

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Brian Grech - an award-winning Maltese fashion photographer
Ric Grech - Bass player for Blind Faith, Ginger Baker's Air Force and Traffic and John Mayall's Blues Band
David Grech - Adelaide, Australia. Respected Custom Ring & Jewellery Maker.

V, Savona-Ventura C, Vassallo-Agius P. Research pointers: Unexplained unexplained
Adjective

strange or unclear because the reason for it is not known

Adj. 1. unexplained - not explained; "accomplished by some unexplained process" differences in sex ratios at birth in Europe and North America North America, third largest continent (1990 est. pop. 365,000,000), c.9,400,000 sq mi (24,346,000 sq km), the northern of the two continents of the Western Hemisphere. . BMJ BMJ n abbr (= British Medical Journal) → vom BMA herausgegebene Zeitschrift 2002;324:1010-1011.

The male-to-female birth ratio is higher in the northern latitudes than in the southern latitudes of North America, but the reverse is true of Europe. There is no explanation for this trend, and temperature seems to be unrelated. The source of this information is the World Health Organization's live birth data from 1958 to 1997 in North America and from 1950 to 1999 in Europe.

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Publication:	Southern Medical Journal
Geographic Code:	1USA
Date:	Jan 1, 2003
Words:	89
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Topics:	Birth rates Surveys Infants (Newborn) Statistics Newborn infants Statistics Sex ratio Surveys

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