World Population imbalance between the sexes

[kandrathe]

According to the wiki article I linked Pete, the ratio of male to female births appears to be between 1.03 and 1.07 male to female. I know we tend to see a stable population around 48% male to 52% female, but actual birth ratio according to the article gives the edge to males. Also, for the western cultures and Japan, all countries have seen significant losses in the males due to wars since the mid 19th century into the mid 20th century. This has had to have a definite curtailing of the male population in western countries including Japan.

Yes, but that is before males start dying off...

Infant Mortality (US)
male: 6.72 deaths/1,000 live births
female: 5.37 deaths/1,000 live births

From conception forward, males are more likely to die. You can see the male attrition by looking at age bands;

Age Structure
0-14 years: 20.1% (male 32,107,900/female 30,781,823)
15-64 years: 66.8% (male 104,411,352/female 104,808,064)
65 years and over: 13.1% (male 17,745,363/female 23,377,542) (2011 est.)

Median Age
male: 35.6 years
female: 38.2 years (2011 est.)

Sex Ratio;
at birth: 1.047 male(s)/female
under 15 years: 1.04 male(s)/female
15-64 years: 1 male(s)/female
65 years and over: 0.75 male(s)/female
total population: 0.97 male(s)/female (2011 est.)

Life expectancy
total population: 78.37 years
male: 75.92 years
female: 80.93 years (2011 est.)

I think the risk of child birth is still one of the greater equalizers in male vs female mortality. All in all, I think I'd rather charge a machine gun nest than go through the event of giving birth.