The effects of climate change may vary across demographic groups.

Team size should be 5-7 members with even distribution of member characteristics across groups.

He is a black man whose appeal cuts across demographic groups.

Prevalence across different racial groups is similar; race does not appear to be a risk factor.

Difference in men's incomes and number of children across ethnic groups.

The units, foreign or Soviet, cost more than $1,500 but are distributed across social groups.

There are large differences in poverty rates across racial groups.

It's easy for me to communicate with patients across social groups and ages.

Written language is also more widespread across cultural groups, and its users do not share a common frame of reference.

That is, members across groups have to rely on one another to accomplish some goal or task.