Although age is the biggest single risk factor - 80% of breast cancers are diagnosed in women over the age of 50 - being overweight after the menopause increases your risk even further.

尽管年龄是最大的单一风险因素，乳腺癌女性患者中有80%年届50岁以上，但绝经后的超重会加重患上乳腺癌的风险。

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The age of pupils can be another determining factor: under-age pupils are more likely to repeat a grade, while over-age pupils tend to leave school early.

UNESCO: MEDIA SERVICES