Table 4

Results of K-function space-time clustering analyses for place of diagnosis and date of birtha

ICCCb code(s)

Disease group

Geographical distancec (P-values)

NN thresholdd (P-values)


III(a)

Ependymoma

e

0.73


III(b)

Astrocytoma

0.75

0.63


III(a), III(b)

Ependymoma and Astrocytoma

0.94

0.87


III(c)

PNET

0.69

0.42


III(d)

Other gliomas

0.85

0.82


III(e), III(f)

Other Specified and Unspecified

0.53

0.26


III(a-f)

All CNS tumours

0.74

0.40


aCases are close in time if dates of birth differ by <t, where t is in the range 0.1 year to 1.5 year.

b International Classification of Childhood Cancer.

cCases are close in space if distances between their locations differ by <s, where s is in the range 0.5-7.5 km.

dCases are close in space if either one is within the distance to the Nth nearest neighbour of the other, where N ranges from 1-15.

eToo few cases for analysis.

McNally et al. BMC Cancer 2012 12:13   doi:10.1186/1471-2407-12-13

Open Data