Fathers and mothers....some demographics

Not sure why, but this comes up in discussions every once in a while:

Percent distribution of women 40-44 years of age in 2002 by number of children ever born: No children: 15.0%

Percent distribution of men 40-44 years of age in 2002 by number of children ever fathered: No children: 22.4% -from CDC

From a slightly different source (which is also the CDC):

At every educational level, higher percentages of women than men have had a child and the gender difference is more pronounced for those with less than a high school diploma (73 percent of men,  versus 91 percent of women).