See Also: Cancer cluster(health)
cluster(2)(dictionary)
cluster(1)(dictionary)
Cluster(health)
egg cluster(medicine)
globular cluster(encyclopedia)
cluster 1, noun(dictionary)
cluster analysis(medicine)
cluster 2, verb(dictionary)
cluster headache(medicine)

Cancer cluster (health)


A greater-than-expected number of cancer cases that occurs within a group of people in a geographic area over a period of time. The expected number of cancer cases is calculated and compared to the observed number of cancer cases. A cancer cluster is confirmed when the observed/expected ratio is greater than 1.0, and the difference is statistically significant.