It has been confirmed and validated by several international organizations and there is no denying that majority of those seeking asylum in Europe are strong, able-bodied and young men of fighting age.
The United Nations has registered over 4.2 million Syrian refugees, a step in seeking asylum from other countries, and has a demographic snapshot of about half of them. Of the 2.1 million registered in Egypt, Iraq, Jordan and Lebanon there's a pretty even split in gender: about 50.5 percent are women and 49.7 percent are men. For men and women, the bulk of refugees (a little under a quarter each) are between the age of 18 and 59.