Women had a higher age, now add the portion of people left because the statistics suggest that if a woman has a child, there is now a greater age to have children left more.
Woman with child at the age higher increase of left-handed because statistics indicate. If a woman has a child at the age they are more likely to have children, the more left-handed.
Women have a higher age to increase of the left-handed because statistical indicators. If a woman have a child at the age is not likely to have a left-handed.