Graphs showing male birth ratios in Ontario

The graphs below were formulated by the CBC from the research reportSex ratios among Canadian liveborn infants of mothers from differentcountries published in the Canadian Medical Association Journal.Each blue bar shows the ratio of male births to female births for the corresponding country, according to the placement within the family birth order. The study was based on 766,688 live single births in Ontario between 2002 and 2007.