Objects in biological samples tend to end up in more concentrated groups 28.
The next big blockbusters, they suggest, will come from smaller, more concentrated, groups.
Two distinct groups of Nenets differ in dialect as well as in cultural traditions: the Forest Nenets, a smaller, more-concentrated group in the wooded area north of the central Ob River; and the Tundra Nenets, a group whose territory stretches roughly 1,000 miles eastward from the White Sea.
Testing yield may change over time as the epidemic evolves and potentially becomes more concentrated in groups that are hard to reach.
Spelman and Eck (1989) later suggested that crime was even more concentrated among this group.
But their national banking systems are less centralised than Britain's, where the choice of banks is growing ever more concentrated among a small group of relatively homogeneous institutions.As the new rescue plan has attracted brickbats rather than plaudits, pressure is growing for the government to go the whole hog and nationalise the banks in which it has such a big stake.
Whether obesity will follow the classic pattern and become more concentrated in less-advantaged groups or whether it will remain widespread in this population is uncertain.
As incidence decreases, TB becomes more and more concentrated in certain vulnerable groups, such as the poor, homeless people, migrants, people living with HIV/AIDS, people who use substances and alcohol harmfully, prisoners and marginalised groups.
A concentration curve falling below the diagonal (concentration index >0) indicates that surgery rates are less concentrated in the first population group (lower quintiles of economic level) and more concentrated in the last population groups (higher quintiles of economic level).
Conversely, a concentration curve located above the diagonal (concentration index < 0) indicates that surgical rates are more concentrated in the first population groups (lower economic level) and less concentrated in the last population groups (higher economic level) [ 16, 17].
