It found that a husband who is nine or more years older than his wife is twice as likely to get divorced, as are husbands who get married before they turn 25.

Children also influence the longevity of a marriage or relationship, with one-fifth of couples who have kids before marriage — either from a previous relationship or in the same relationship — having separated compared to just nine percent of couples without children born before marriage.

Women who want children much more than their partners are also more likely to get a divorce.

A couple’s parents also have a role to play in their own relationship, with the study showing some 16 percent of men and women whose parents ever separated or divorced experienced marital separation themselves compared to 10 percent for those whose parents did not separate.