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Table 3 Results of K-function space-time clustering analyses for place of birth and date of diagnosisa

From: Space-time clustering of childhood central nervous system tumours in Yorkshire, UK

ICCCb code(s)

Disease group

Geographical distancec (P-values)

NN thresholdd (P-values)

III(a)

Ependymoma

e

0.51

III(b)

Astrocytoma

0.26

0.46

III(a), III(b)

Ependymoma and Astrocytoma

0.41

0.77

III(c)

PNET

0.10

0.21

III(d)

Other gliomas

0.43

0.39

III(e), III(f)

Other Specified and Unspecified

0.85

0.36

III(a-f)

All CNS tumours

0.53

0.48

  1. aCases are close in time if dates of diagnosis differ by <t, where t is in the range 0.1 year to 1.5 year.
  2. b International Classification of Childhood Cancer.
  3. cCases are close in space if distances between their locations differ by <s, where s is in the range 0.5-7.5 km.
  4. dCases are close in space if either one is within the distance to the N th nearest neighbour of the other, where N ranges from 1-15.
  5. eToo few cases for analysis.
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BMC Cancer

ISSN: 1471-2407

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