A recent Australian study shows that certain factors need to be in place for a successful and long-lasting marriage. In addition to love, factors such as age difference, financial situation and living habits all have an impact on whether the two parties can grow old together.

　　Reuters reported on the 14th, the Australian National University researchers from 2001 to 2007 tracking survey of nearly 2,500 married couples or unmarried cohabiting couples, analysis of the impact of the relationship between the two sides can be a long time some of the factors.

　　One of the factors is the age gap between the two sides. The study shows that if the husband is nine years older than his wife or more, the couple is twice as likely to divorce as others.

　　Factor number two is children. The divorce rate for couples who had not yet had children or had children from a previous marriage was 20 per cent, while the rate for couples who had children after marriage was 9 per cent.

　　The third factor is economic status. Sixteen per cent of couples eventually broke up if the economic situation was poor or if the man was unemployed. In contrast, only 9 per cent of those in a better financial situation break up.

　　Factors such as the marital status of the parents and whether or not the partner smokes also have an impact on whether or not the marriage will last.

　　Factors such as the number of children born after marriage, the age of the children, the wife's job situation and the length of service of both partners did not have a significant effect on the longevity of the marriage.