There tend to be geographic clusters of "exempters" in certain counties or even neighborhoods or schools.
Twelve of the women had convictions for prostitution, and their bodies were found in two distinct geographic clusters.
Geographic clusters confer advantages to collocated firms, in particular access to local know-how.
Lieu, T. A., Ray, G. T., Klein, N. P., Chung, C. & Kulldorff, M. Geographic clusters in underimmunization and vaccine refusal.
NGSadmix analysis resulted in an optimal K = 2 (SI 7, Fig. S2), also suggesting two distinct geographic clusters.
Previous studies of American Muslims located respondents based on surnames, mosque attendance or geographic clusters, which polling experts say can skew the results.
The mothers were grouped according to geographic clusters and randomly assigned to one of six interventions or a control group.
For example, they might want to identify relevant geographic clusters of talent around the world and assess their access to that talent.
Occasionally, there are geographic clusters, three or four children from the same area, but there's no real evidence.
He and his colleagues built a database of cases, identified geographic clusters and mapped the epidemic's movement.
But some doctors fear that eliminating states' religious exemptions won't adequately address the risk of outbreaks tied to geographic clusters of parents who are opting out of vaccinating their children.
