The leading causes of death in this age group are also changing.

这个年龄段的主要死亡原因也在变化。

youdao

Evolutionarily speaking, people in this age group are at a stage in which they can prepare to find a mate and start their own family while separating from parents and striking out on their own.

从进化的角度来说，这个年龄段的人正处于这样一个阶段：他们可以在与父母分开、自谋生计的同时，为寻找伴侣和组建自己的家庭做准备。

youdao

These causes account for nearly 80% of deaths in this age group.

这一年龄组死亡的约80%由这些原因导致。

youdao

But for both sexes combined, the leading killer in this age group was traffic accidents.

VOA: special.2009.09.28

It is the leading cause of blindness in this country, in this age group by far.

CNN: Smoking quadruples risk for vision-stealing eye disease

Sadly, tobacco use in this age group has not improved over the last decade.

FORBES: Preventing Tobacco Use Among Youth and Young Adults | SurgeonGeneral.gov

"Kids in this age group understand being responsible for things they care about, " she says.

FORBES: Mobiles For Minors